Primitive Type u8
1.0.0 ·Expand description
The 8-bit unsigned integer type.
Implementations
sourceimpl u8
impl u8
sourcepub fn from_str_radix(src: &str, radix: u32) -> Result<Self, ParseIntError>
pub fn from_str_radix(src: &str, radix: u32) -> Result<Self, ParseIntError>
Converts a string slice in a given base to an integer.
The string is expected to be an optional +
sign
followed by digits.
Leading and trailing whitespace represent an error.
Digits are a subset of these characters, depending on radix
:
0-9
a-z
A-Z
Panics
This function panics if radix
is not in the range from 2 to 36.
Examples
Basic usage:
assert_eq!(u8::from_str_radix("A", 16), Ok(10));
Runconst: 1.32.0 · sourcepub const fn count_ones(self) -> u32
pub const fn count_ones(self) -> u32
const: 1.32.0 · sourcepub const fn count_zeros(self) -> u32
pub const fn count_zeros(self) -> u32
const: 1.32.0 · sourcepub const fn leading_zeros(self) -> u32
pub const fn leading_zeros(self) -> u32
const: 1.32.0 · sourcepub const fn trailing_zeros(self) -> u32
pub const fn trailing_zeros(self) -> u32
1.46.0 (const: 1.46.0) · sourcepub const fn leading_ones(self) -> u32
pub const fn leading_ones(self) -> u32
1.46.0 (const: 1.46.0) · sourcepub const fn trailing_ones(self) -> u32
pub const fn trailing_ones(self) -> u32
const: 1.32.0 · sourcepub const fn rotate_left(self, n: u32) -> Self
pub const fn rotate_left(self, n: u32) -> Self
const: 1.32.0 · sourcepub const fn rotate_right(self, n: u32) -> Self
pub const fn rotate_right(self, n: u32) -> Self
const: 1.32.0 · sourcepub const fn swap_bytes(self) -> Self
pub const fn swap_bytes(self) -> Self
1.37.0 (const: 1.37.0) · sourcepub const fn reverse_bits(self) -> Self
pub const fn reverse_bits(self) -> Self
const: 1.47.0 · sourcepub const fn checked_add(self, rhs: Self) -> Option<Self>
pub const fn checked_add(self, rhs: Self) -> Option<Self>
const: unstable · sourcepub unsafe fn unchecked_add(self, rhs: Self) -> Self
🔬This is a nightly-only experimental API. (unchecked_math
#85122)
pub unsafe fn unchecked_add(self, rhs: Self) -> Self
unchecked_math
#85122)Unchecked integer addition. Computes self + rhs
, assuming overflow
cannot occur.
Safety
This results in undefined behavior when
self + rhs > u8::MAX
or self + rhs < u8::MIN
,
i.e. when checked_add
would return None
.
1.67.0-dev (const: 1.67.0-dev) · sourcepub const fn checked_add_signed(self, rhs: i8) -> Option<Self>
pub const fn checked_add_signed(self, rhs: i8) -> Option<Self>
const: 1.47.0 · sourcepub const fn checked_sub(self, rhs: Self) -> Option<Self>
pub const fn checked_sub(self, rhs: Self) -> Option<Self>
const: unstable · sourcepub unsafe fn unchecked_sub(self, rhs: Self) -> Self
🔬This is a nightly-only experimental API. (unchecked_math
#85122)
pub unsafe fn unchecked_sub(self, rhs: Self) -> Self
unchecked_math
#85122)Unchecked integer subtraction. Computes self - rhs
, assuming overflow
cannot occur.
Safety
This results in undefined behavior when
self - rhs > u8::MAX
or self - rhs < u8::MIN
,
i.e. when checked_sub
would return None
.
const: 1.47.0 · sourcepub const fn checked_mul(self, rhs: Self) -> Option<Self>
pub const fn checked_mul(self, rhs: Self) -> Option<Self>
const: unstable · sourcepub unsafe fn unchecked_mul(self, rhs: Self) -> Self
🔬This is a nightly-only experimental API. (unchecked_math
#85122)
pub unsafe fn unchecked_mul(self, rhs: Self) -> Self
unchecked_math
#85122)Unchecked integer multiplication. Computes self * rhs
, assuming overflow
cannot occur.
Safety
This results in undefined behavior when
self * rhs > u8::MAX
or self * rhs < u8::MIN
,
i.e. when checked_mul
would return None
.
const: 1.52.0 · sourcepub const fn checked_div(self, rhs: Self) -> Option<Self>
pub const fn checked_div(self, rhs: Self) -> Option<Self>
1.38.0 (const: 1.52.0) · sourcepub const fn checked_div_euclid(self, rhs: Self) -> Option<Self>
pub const fn checked_div_euclid(self, rhs: Self) -> Option<Self>
1.7.0 (const: 1.52.0) · sourcepub const fn checked_rem(self, rhs: Self) -> Option<Self>
pub const fn checked_rem(self, rhs: Self) -> Option<Self>
1.38.0 (const: 1.52.0) · sourcepub const fn checked_rem_euclid(self, rhs: Self) -> Option<Self>
pub const fn checked_rem_euclid(self, rhs: Self) -> Option<Self>
1.67.0-dev (const: 1.67.0-dev) · sourcepub const fn ilog(self, base: Self) -> u32
pub const fn ilog(self, base: Self) -> u32
Returns the logarithm of the number with respect to an arbitrary base, rounded down.
This method might not be optimized owing to implementation details;
ilog2
can produce results more efficiently for base 2, and ilog10
can produce results more efficiently for base 10.
Panics
This function will panic if self
is zero, or if base
is less than 2.
Examples
assert_eq!(5u8.ilog(5), 1);
Run1.67.0-dev (const: 1.67.0-dev) · sourcepub const fn checked_ilog(self, base: Self) -> Option<u32>
pub const fn checked_ilog(self, base: Self) -> Option<u32>
Returns the logarithm of the number with respect to an arbitrary base, rounded down.
Returns None
if the number is zero, or if the base is not at least 2.
This method might not be optimized owing to implementation details;
checked_ilog2
can produce results more efficiently for base 2, and
checked_ilog10
can produce results more efficiently for base 10.
Examples
assert_eq!(5u8.checked_ilog(5), Some(1));
Run1.67.0-dev (const: 1.67.0-dev) · sourcepub const fn checked_ilog2(self) -> Option<u32>
pub const fn checked_ilog2(self) -> Option<u32>
1.67.0-dev (const: 1.67.0-dev) · sourcepub const fn checked_ilog10(self) -> Option<u32>
pub const fn checked_ilog10(self) -> Option<u32>
1.7.0 (const: 1.47.0) · sourcepub const fn checked_neg(self) -> Option<Self>
pub const fn checked_neg(self) -> Option<Self>
1.7.0 (const: 1.47.0) · sourcepub const fn checked_shl(self, rhs: u32) -> Option<Self>
pub const fn checked_shl(self, rhs: u32) -> Option<Self>
const: unstable · sourcepub unsafe fn unchecked_shl(self, rhs: Self) -> Self
🔬This is a nightly-only experimental API. (unchecked_math
#85122)
pub unsafe fn unchecked_shl(self, rhs: Self) -> Self
unchecked_math
#85122)Unchecked shift left. Computes self << rhs
, assuming that
rhs
is less than the number of bits in self
.
Safety
This results in undefined behavior if rhs
is larger than
or equal to the number of bits in self
,
i.e. when checked_shl
would return None
.
1.7.0 (const: 1.47.0) · sourcepub const fn checked_shr(self, rhs: u32) -> Option<Self>
pub const fn checked_shr(self, rhs: u32) -> Option<Self>
const: unstable · sourcepub unsafe fn unchecked_shr(self, rhs: Self) -> Self
🔬This is a nightly-only experimental API. (unchecked_math
#85122)
pub unsafe fn unchecked_shr(self, rhs: Self) -> Self
unchecked_math
#85122)Unchecked shift right. Computes self >> rhs
, assuming that
rhs
is less than the number of bits in self
.
Safety
This results in undefined behavior if rhs
is larger than
or equal to the number of bits in self
,
i.e. when checked_shr
would return None
.
1.34.0 (const: 1.50.0) · sourcepub const fn checked_pow(self, exp: u32) -> Option<Self>
pub const fn checked_pow(self, exp: u32) -> Option<Self>
const: 1.47.0 · sourcepub const fn saturating_add(self, rhs: Self) -> Self
pub const fn saturating_add(self, rhs: Self) -> Self
1.67.0-dev (const: 1.67.0-dev) · sourcepub const fn saturating_add_signed(self, rhs: i8) -> Self
pub const fn saturating_add_signed(self, rhs: i8) -> Self
const: 1.47.0 · sourcepub const fn saturating_sub(self, rhs: Self) -> Self
pub const fn saturating_sub(self, rhs: Self) -> Self
1.7.0 (const: 1.47.0) · sourcepub const fn saturating_mul(self, rhs: Self) -> Self
pub const fn saturating_mul(self, rhs: Self) -> Self
1.58.0 (const: 1.58.0) · sourcepub const fn saturating_div(self, rhs: Self) -> Self
pub const fn saturating_div(self, rhs: Self) -> Self
1.34.0 (const: 1.50.0) · sourcepub const fn saturating_pow(self, exp: u32) -> Self
pub const fn saturating_pow(self, exp: u32) -> Self
const: 1.32.0 · sourcepub const fn wrapping_add(self, rhs: Self) -> Self
pub const fn wrapping_add(self, rhs: Self) -> Self
1.67.0-dev (const: 1.67.0-dev) · sourcepub const fn wrapping_add_signed(self, rhs: i8) -> Self
pub const fn wrapping_add_signed(self, rhs: i8) -> Self
const: 1.32.0 · sourcepub const fn wrapping_sub(self, rhs: Self) -> Self
pub const fn wrapping_sub(self, rhs: Self) -> Self
const: 1.32.0 · sourcepub const fn wrapping_mul(self, rhs: Self) -> Self
pub const fn wrapping_mul(self, rhs: Self) -> Self
Wrapping (modular) multiplication. Computes self * rhs
, wrapping around at the boundary of the type.
Examples
Basic usage:
Please note that this example is shared between integer types.
Which explains why u8
is used here.
assert_eq!(10u8.wrapping_mul(12), 120);
assert_eq!(25u8.wrapping_mul(12), 44);
Run1.2.0 (const: 1.52.0) · sourcepub const fn wrapping_div(self, rhs: Self) -> Self
pub const fn wrapping_div(self, rhs: Self) -> Self
Wrapping (modular) division. Computes self / rhs
.
Wrapped division on unsigned types is just normal division.
There’s no way wrapping could ever happen.
This function exists, so that all operations
are accounted for in the wrapping operations.
Examples
Basic usage:
assert_eq!(100u8.wrapping_div(10), 10);
Run1.38.0 (const: 1.52.0) · sourcepub const fn wrapping_div_euclid(self, rhs: Self) -> Self
pub const fn wrapping_div_euclid(self, rhs: Self) -> Self
Wrapping Euclidean division. Computes self.div_euclid(rhs)
.
Wrapped division on unsigned types is just normal division.
There’s no way wrapping could ever happen.
This function exists, so that all operations
are accounted for in the wrapping operations.
Since, for the positive integers, all common
definitions of division are equal, this
is exactly equal to self.wrapping_div(rhs)
.
Examples
Basic usage:
assert_eq!(100u8.wrapping_div_euclid(10), 10);
Run1.2.0 (const: 1.52.0) · sourcepub const fn wrapping_rem(self, rhs: Self) -> Self
pub const fn wrapping_rem(self, rhs: Self) -> Self
Wrapping (modular) remainder. Computes self % rhs
.
Wrapped remainder calculation on unsigned types is
just the regular remainder calculation.
There’s no way wrapping could ever happen.
This function exists, so that all operations
are accounted for in the wrapping operations.
Examples
Basic usage:
assert_eq!(100u8.wrapping_rem(10), 0);
Run1.38.0 (const: 1.52.0) · sourcepub const fn wrapping_rem_euclid(self, rhs: Self) -> Self
pub const fn wrapping_rem_euclid(self, rhs: Self) -> Self
Wrapping Euclidean modulo. Computes self.rem_euclid(rhs)
.
Wrapped modulo calculation on unsigned types is
just the regular remainder calculation.
There’s no way wrapping could ever happen.
This function exists, so that all operations
are accounted for in the wrapping operations.
Since, for the positive integers, all common
definitions of division are equal, this
is exactly equal to self.wrapping_rem(rhs)
.
Examples
Basic usage:
assert_eq!(100u8.wrapping_rem_euclid(10), 0);
Run1.2.0 (const: 1.32.0) · sourcepub const fn wrapping_neg(self) -> Self
pub const fn wrapping_neg(self) -> Self
Wrapping (modular) negation. Computes -self
,
wrapping around at the boundary of the type.
Since unsigned types do not have negative equivalents
all applications of this function will wrap (except for -0
).
For values smaller than the corresponding signed type’s maximum
the result is the same as casting the corresponding signed value.
Any larger values are equivalent to MAX + 1 - (val - MAX - 1)
where
MAX
is the corresponding signed type’s maximum.
Examples
Basic usage:
Please note that this example is shared between integer types.
Which explains why i8
is used here.
assert_eq!(100i8.wrapping_neg(), -100);
assert_eq!((-128i8).wrapping_neg(), -128);
Run1.2.0 (const: 1.32.0) · sourcepub const fn wrapping_shl(self, rhs: u32) -> Self
pub const fn wrapping_shl(self, rhs: u32) -> Self
Panic-free bitwise shift-left; yields self << mask(rhs)
,
where mask
removes any high-order bits of rhs
that
would cause the shift to exceed the bitwidth of the type.
Note that this is not the same as a rotate-left; the
RHS of a wrapping shift-left is restricted to the range
of the type, rather than the bits shifted out of the LHS
being returned to the other end. The primitive integer
types all implement a rotate_left
function,
which may be what you want instead.
Examples
Basic usage:
assert_eq!(1u8.wrapping_shl(7), 128);
assert_eq!(1u8.wrapping_shl(128), 1);
Run1.2.0 (const: 1.32.0) · sourcepub const fn wrapping_shr(self, rhs: u32) -> Self
pub const fn wrapping_shr(self, rhs: u32) -> Self
Panic-free bitwise shift-right; yields self >> mask(rhs)
,
where mask
removes any high-order bits of rhs
that
would cause the shift to exceed the bitwidth of the type.
Note that this is not the same as a rotate-right; the
RHS of a wrapping shift-right is restricted to the range
of the type, rather than the bits shifted out of the LHS
being returned to the other end. The primitive integer
types all implement a rotate_right
function,
which may be what you want instead.
Examples
Basic usage:
assert_eq!(128u8.wrapping_shr(7), 1);
assert_eq!(128u8.wrapping_shr(128), 128);
Run1.34.0 (const: 1.50.0) · sourcepub const fn wrapping_pow(self, exp: u32) -> Self
pub const fn wrapping_pow(self, exp: u32) -> Self
1.7.0 (const: 1.32.0) · sourcepub const fn overflowing_add(self, rhs: Self) -> (Self, bool)
pub const fn overflowing_add(self, rhs: Self) -> (Self, bool)
Calculates self
+ rhs
Returns a tuple of the addition along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.
Examples
Basic usage
assert_eq!(5u8.overflowing_add(2), (7, false));
assert_eq!(u8::MAX.overflowing_add(1), (0, true));
Runconst: unstable · sourcepub fn carrying_add(self, rhs: Self, carry: bool) -> (Self, bool)
🔬This is a nightly-only experimental API. (bigint_helper_methods
#85532)
pub fn carrying_add(self, rhs: Self, carry: bool) -> (Self, bool)
bigint_helper_methods
#85532)Calculates self
+ rhs
+ carry
and returns a tuple containing
the sum and the output carry.
Performs “ternary addition” of two integer operands and a carry-in bit, and returns an output integer and a carry-out bit. This allows chaining together multiple additions to create a wider addition, and can be useful for bignum addition.
This can be thought of as a 8-bit “full adder”, in the electronics sense.
If the input carry is false, this method is equivalent to
overflowing_add
, and the output carry is
equal to the overflow flag. Note that although carry and overflow
flags are similar for unsigned integers, they are different for
signed integers.
Examples
#![feature(bigint_helper_methods)]
// 3 MAX (a = 3 × 2^8 + 2^8 - 1)
// + 5 7 (b = 5 × 2^8 + 7)
// ---------
// 9 6 (sum = 9 × 2^8 + 6)
let (a1, a0): (u8, u8) = (3, u8::MAX);
let (b1, b0): (u8, u8) = (5, 7);
let carry0 = false;
let (sum0, carry1) = a0.carrying_add(b0, carry0);
assert_eq!(carry1, true);
let (sum1, carry2) = a1.carrying_add(b1, carry1);
assert_eq!(carry2, false);
assert_eq!((sum1, sum0), (9, 6));
Run1.67.0-dev (const: 1.67.0-dev) · sourcepub const fn overflowing_add_signed(self, rhs: i8) -> (Self, bool)
pub const fn overflowing_add_signed(self, rhs: i8) -> (Self, bool)
Calculates self
+ rhs
with a signed rhs
Returns a tuple of the addition along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.
Examples
Basic usage:
assert_eq!(1u8.overflowing_add_signed(2), (3, false));
assert_eq!(1u8.overflowing_add_signed(-2), (u8::MAX, true));
assert_eq!((u8::MAX - 2).overflowing_add_signed(4), (1, true));
Run1.7.0 (const: 1.32.0) · sourcepub const fn overflowing_sub(self, rhs: Self) -> (Self, bool)
pub const fn overflowing_sub(self, rhs: Self) -> (Self, bool)
Calculates self
- rhs
Returns a tuple of the subtraction along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.
Examples
Basic usage
assert_eq!(5u8.overflowing_sub(2), (3, false));
assert_eq!(0u8.overflowing_sub(1), (u8::MAX, true));
Runconst: unstable · sourcepub fn borrowing_sub(self, rhs: Self, borrow: bool) -> (Self, bool)
🔬This is a nightly-only experimental API. (bigint_helper_methods
#85532)
pub fn borrowing_sub(self, rhs: Self, borrow: bool) -> (Self, bool)
bigint_helper_methods
#85532)Calculates self
− rhs
− borrow
and returns a tuple
containing the difference and the output borrow.
Performs “ternary subtraction” by subtracting both an integer
operand and a borrow-in bit from self
, and returns an output
integer and a borrow-out bit. This allows chaining together multiple
subtractions to create a wider subtraction, and can be useful for
bignum subtraction.
Examples
#![feature(bigint_helper_methods)]
// 9 6 (a = 9 × 2^8 + 6)
// - 5 7 (b = 5 × 2^8 + 7)
// ---------
// 3 MAX (diff = 3 × 2^8 + 2^8 - 1)
let (a1, a0): (u8, u8) = (9, 6);
let (b1, b0): (u8, u8) = (5, 7);
let borrow0 = false;
let (diff0, borrow1) = a0.borrowing_sub(b0, borrow0);
assert_eq!(borrow1, true);
let (diff1, borrow2) = a1.borrowing_sub(b1, borrow1);
assert_eq!(borrow2, false);
assert_eq!((diff1, diff0), (3, u8::MAX));
Run1.7.0 (const: 1.32.0) · sourcepub const fn overflowing_mul(self, rhs: Self) -> (Self, bool)
pub const fn overflowing_mul(self, rhs: Self) -> (Self, bool)
Calculates the multiplication of self
and rhs
.
Returns a tuple of the multiplication along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.
Examples
Basic usage:
Please note that this example is shared between integer types.
Which explains why u32
is used here.
assert_eq!(5u32.overflowing_mul(2), (10, false));
assert_eq!(1_000_000_000u32.overflowing_mul(10), (1410065408, true));
Run1.7.0 (const: 1.52.0) · sourcepub const fn overflowing_div(self, rhs: Self) -> (Self, bool)
pub const fn overflowing_div(self, rhs: Self) -> (Self, bool)
Calculates the divisor when self
is divided by rhs
.
Returns a tuple of the divisor along with a boolean indicating
whether an arithmetic overflow would occur. Note that for unsigned
integers overflow never occurs, so the second value is always
false
.
Panics
This function will panic if rhs
is 0.
Examples
Basic usage
assert_eq!(5u8.overflowing_div(2), (2, false));
Run1.38.0 (const: 1.52.0) · sourcepub const fn overflowing_div_euclid(self, rhs: Self) -> (Self, bool)
pub const fn overflowing_div_euclid(self, rhs: Self) -> (Self, bool)
Calculates the quotient of Euclidean division self.div_euclid(rhs)
.
Returns a tuple of the divisor along with a boolean indicating
whether an arithmetic overflow would occur. Note that for unsigned
integers overflow never occurs, so the second value is always
false
.
Since, for the positive integers, all common
definitions of division are equal, this
is exactly equal to self.overflowing_div(rhs)
.
Panics
This function will panic if rhs
is 0.
Examples
Basic usage
assert_eq!(5u8.overflowing_div_euclid(2), (2, false));
Run1.7.0 (const: 1.52.0) · sourcepub const fn overflowing_rem(self, rhs: Self) -> (Self, bool)
pub const fn overflowing_rem(self, rhs: Self) -> (Self, bool)
Calculates the remainder when self
is divided by rhs
.
Returns a tuple of the remainder after dividing along with a boolean
indicating whether an arithmetic overflow would occur. Note that for
unsigned integers overflow never occurs, so the second value is
always false
.
Panics
This function will panic if rhs
is 0.
Examples
Basic usage
assert_eq!(5u8.overflowing_rem(2), (1, false));
Run1.38.0 (const: 1.52.0) · sourcepub const fn overflowing_rem_euclid(self, rhs: Self) -> (Self, bool)
pub const fn overflowing_rem_euclid(self, rhs: Self) -> (Self, bool)
Calculates the remainder self.rem_euclid(rhs)
as if by Euclidean division.
Returns a tuple of the modulo after dividing along with a boolean
indicating whether an arithmetic overflow would occur. Note that for
unsigned integers overflow never occurs, so the second value is
always false
.
Since, for the positive integers, all common
definitions of division are equal, this operation
is exactly equal to self.overflowing_rem(rhs)
.
Panics
This function will panic if rhs
is 0.
Examples
Basic usage
assert_eq!(5u8.overflowing_rem_euclid(2), (1, false));
Run1.7.0 (const: 1.32.0) · sourcepub const fn overflowing_neg(self) -> (Self, bool)
pub const fn overflowing_neg(self) -> (Self, bool)
Negates self in an overflowing fashion.
Returns !self + 1
using wrapping operations to return the value
that represents the negation of this unsigned value. Note that for
positive unsigned values overflow always occurs, but negating 0 does
not overflow.
Examples
Basic usage
assert_eq!(0u8.overflowing_neg(), (0, false));
assert_eq!(2u8.overflowing_neg(), (-2i32 as u8, true));
Run1.7.0 (const: 1.32.0) · sourcepub const fn overflowing_shl(self, rhs: u32) -> (Self, bool)
pub const fn overflowing_shl(self, rhs: u32) -> (Self, bool)
Shifts self left by rhs
bits.
Returns a tuple of the shifted version of self along with a boolean indicating whether the shift value was larger than or equal to the number of bits. If the shift value is too large, then value is masked (N-1) where N is the number of bits, and this value is then used to perform the shift.
Examples
Basic usage
assert_eq!(0x1u8.overflowing_shl(4), (0x10, false));
assert_eq!(0x1u8.overflowing_shl(132), (0x10, true));
Run1.7.0 (const: 1.32.0) · sourcepub const fn overflowing_shr(self, rhs: u32) -> (Self, bool)
pub const fn overflowing_shr(self, rhs: u32) -> (Self, bool)
Shifts self right by rhs
bits.
Returns a tuple of the shifted version of self along with a boolean indicating whether the shift value was larger than or equal to the number of bits. If the shift value is too large, then value is masked (N-1) where N is the number of bits, and this value is then used to perform the shift.
Examples
Basic usage
assert_eq!(0x10u8.overflowing_shr(4), (0x1, false));
assert_eq!(0x10u8.overflowing_shr(132), (0x1, true));
Run1.34.0 (const: 1.50.0) · sourcepub const fn overflowing_pow(self, exp: u32) -> (Self, bool)
pub const fn overflowing_pow(self, exp: u32) -> (Self, bool)
1.38.0 (const: 1.52.0) · sourcepub const fn div_euclid(self, rhs: Self) -> Self
pub const fn div_euclid(self, rhs: Self) -> Self
1.38.0 (const: 1.52.0) · sourcepub const fn rem_euclid(self, rhs: Self) -> Self
pub const fn rem_euclid(self, rhs: Self) -> Self
sourcepub const fn div_floor(self, rhs: Self) -> Self
🔬This is a nightly-only experimental API. (int_roundings
#88581)
pub const fn div_floor(self, rhs: Self) -> Self
int_roundings
#88581)sourcepub const fn div_ceil(self, rhs: Self) -> Self
🔬This is a nightly-only experimental API. (int_roundings
#88581)
pub const fn div_ceil(self, rhs: Self) -> Self
int_roundings
#88581)Calculates the quotient of self
and rhs
, rounding the result towards positive infinity.
Panics
This function will panic if rhs
is zero.
Overflow behavior
On overflow, this function will panic if overflow checks are enabled (default in debug mode) and wrap if overflow checks are disabled (default in release mode).
Examples
Basic usage:
#![feature(int_roundings)]
assert_eq!(7_u8.div_ceil(4), 2);
Runsourcepub const fn next_multiple_of(self, rhs: Self) -> Self
🔬This is a nightly-only experimental API. (int_roundings
#88581)
pub const fn next_multiple_of(self, rhs: Self) -> Self
int_roundings
#88581)Calculates the smallest value greater than or equal to self
that
is a multiple of rhs
.
Panics
This function will panic if rhs
is zero.
Overflow behavior
On overflow, this function will panic if overflow checks are enabled (default in debug mode) and wrap if overflow checks are disabled (default in release mode).
Examples
Basic usage:
#![feature(int_roundings)]
assert_eq!(16_u8.next_multiple_of(8), 16);
assert_eq!(23_u8.next_multiple_of(8), 24);
Runsourcepub const fn checked_next_multiple_of(self, rhs: Self) -> Option<Self>
🔬This is a nightly-only experimental API. (int_roundings
#88581)
pub const fn checked_next_multiple_of(self, rhs: Self) -> Option<Self>
int_roundings
#88581)Calculates the smallest value greater than or equal to self
that
is a multiple of rhs
. Returns None
if rhs
is zero or the
operation would result in overflow.
Examples
Basic usage:
#![feature(int_roundings)]
assert_eq!(16_u8.checked_next_multiple_of(8), Some(16));
assert_eq!(23_u8.checked_next_multiple_of(8), Some(24));
assert_eq!(1_u8.checked_next_multiple_of(0), None);
assert_eq!(u8::MAX.checked_next_multiple_of(2), None);
Runconst: 1.32.0 · sourcepub const fn is_power_of_two(self) -> bool
pub const fn is_power_of_two(self) -> bool
const: 1.50.0 · sourcepub const fn next_power_of_two(self) -> Self
pub const fn next_power_of_two(self) -> Self
Returns the smallest power of two greater than or equal to self
.
When return value overflows (i.e., self > (1 << (N-1))
for type
uN
), it panics in debug mode and the return value is wrapped to 0 in
release mode (the only situation in which method can return 0).
Examples
Basic usage:
assert_eq!(2u8.next_power_of_two(), 2);
assert_eq!(3u8.next_power_of_two(), 4);
Runconst: 1.50.0 · sourcepub const fn checked_next_power_of_two(self) -> Option<Self>
pub const fn checked_next_power_of_two(self) -> Option<Self>
Returns the smallest power of two greater than or equal to n
. If
the next power of two is greater than the type’s maximum value,
None
is returned, otherwise the power of two is wrapped in Some
.
Examples
Basic usage:
assert_eq!(2u8.checked_next_power_of_two(), Some(2));
assert_eq!(3u8.checked_next_power_of_two(), Some(4));
assert_eq!(u8::MAX.checked_next_power_of_two(), None);
Runconst: unstable · sourcepub fn wrapping_next_power_of_two(self) -> Self
🔬This is a nightly-only experimental API. (wrapping_next_power_of_two
#32463)
pub fn wrapping_next_power_of_two(self) -> Self
wrapping_next_power_of_two
#32463)Returns the smallest power of two greater than or equal to n
. If
the next power of two is greater than the type’s maximum value,
the return value is wrapped to 0
.
Examples
Basic usage:
#![feature(wrapping_next_power_of_two)]
assert_eq!(2u8.wrapping_next_power_of_two(), 2);
assert_eq!(3u8.wrapping_next_power_of_two(), 4);
assert_eq!(u8::MAX.wrapping_next_power_of_two(), 0);
Run1.32.0 (const: 1.44.0) · sourcepub const fn to_be_bytes(self) -> [u8; 1]
pub const fn to_be_bytes(self) -> [u8; 1]
1.32.0 (const: 1.44.0) · sourcepub const fn to_le_bytes(self) -> [u8; 1]
pub const fn to_le_bytes(self) -> [u8; 1]
1.32.0 (const: 1.44.0) · sourcepub const fn to_ne_bytes(self) -> [u8; 1]
pub const fn to_ne_bytes(self) -> [u8; 1]
Return the memory representation of this integer as a byte array in native byte order.
As the target platform’s native endianness is used, portable code
should use to_be_bytes
or to_le_bytes
, as appropriate,
instead.
Examples
let bytes = 0x12u8.to_ne_bytes();
assert_eq!(
bytes,
if cfg!(target_endian = "big") {
[0x12]
} else {
[0x12]
}
);
Run1.32.0 (const: 1.44.0) · sourcepub const fn from_be_bytes(bytes: [u8; 1]) -> Self
pub const fn from_be_bytes(bytes: [u8; 1]) -> Self
Create a native endian integer value from its representation as a byte array in big endian.
Examples
let value = u8::from_be_bytes([0x12]);
assert_eq!(value, 0x12);
RunWhen starting from a slice rather than an array, fallible conversion APIs can be used:
fn read_be_u8(input: &mut &[u8]) -> u8 {
let (int_bytes, rest) = input.split_at(std::mem::size_of::<u8>());
*input = rest;
u8::from_be_bytes(int_bytes.try_into().unwrap())
}
Run1.32.0 (const: 1.44.0) · sourcepub const fn from_le_bytes(bytes: [u8; 1]) -> Self
pub const fn from_le_bytes(bytes: [u8; 1]) -> Self
Create a native endian integer value from its representation as a byte array in little endian.
Examples
let value = u8::from_le_bytes([0x12]);
assert_eq!(value, 0x12);
RunWhen starting from a slice rather than an array, fallible conversion APIs can be used:
fn read_le_u8(input: &mut &[u8]) -> u8 {
let (int_bytes, rest) = input.split_at(std::mem::size_of::<u8>());
*input = rest;
u8::from_le_bytes(int_bytes.try_into().unwrap())
}
Run1.32.0 (const: 1.44.0) · sourcepub const fn from_ne_bytes(bytes: [u8; 1]) -> Self
pub const fn from_ne_bytes(bytes: [u8; 1]) -> Self
Create a native endian integer value from its memory representation as a byte array in native endianness.
As the target platform’s native endianness is used, portable code
likely wants to use from_be_bytes
or from_le_bytes
, as
appropriate instead.
Examples
let value = u8::from_ne_bytes(if cfg!(target_endian = "big") {
[0x12]
} else {
[0x12]
});
assert_eq!(value, 0x12);
RunWhen starting from a slice rather than an array, fallible conversion APIs can be used:
fn read_ne_u8(input: &mut &[u8]) -> u8 {
let (int_bytes, rest) = input.split_at(std::mem::size_of::<u8>());
*input = rest;
u8::from_ne_bytes(int_bytes.try_into().unwrap())
}
Runconst: 1.32.0 · sourcepub const fn min_value() -> Self
👎Deprecating in a future Rust version: replaced by the MIN
associated constant on this type
pub const fn min_value() -> Self
MIN
associated constant on this typeNew code should prefer to use
u8::MIN
instead.
Returns the smallest value that can be represented by this integer type.
const: 1.32.0 · sourcepub const fn max_value() -> Self
👎Deprecating in a future Rust version: replaced by the MAX
associated constant on this type
pub const fn max_value() -> Self
MAX
associated constant on this typeNew code should prefer to use
u8::MAX
instead.
Returns the largest value that can be represented by this integer type.
const: unstable · sourcepub fn widening_mul(self, rhs: Self) -> (Self, Self)
🔬This is a nightly-only experimental API. (bigint_helper_methods
#85532)
pub fn widening_mul(self, rhs: Self) -> (Self, Self)
bigint_helper_methods
#85532)Calculates the complete product self * rhs
without the possibility to overflow.
This returns the low-order (wrapping) bits and the high-order (overflow) bits of the result as two separate values, in that order.
If you also need to add a carry to the wide result, then you want
Self::carrying_mul
instead.
Examples
Basic usage:
Please note that this example is shared between integer types.
Which explains why u32
is used here.
#![feature(bigint_helper_methods)]
assert_eq!(5u32.widening_mul(2), (10, 0));
assert_eq!(1_000_000_000u32.widening_mul(10), (1410065408, 2));
Runconst: unstable · sourcepub fn carrying_mul(self, rhs: Self, carry: Self) -> (Self, Self)
🔬This is a nightly-only experimental API. (bigint_helper_methods
#85532)
pub fn carrying_mul(self, rhs: Self, carry: Self) -> (Self, Self)
bigint_helper_methods
#85532)Calculates the “full multiplication” self * rhs + carry
without the possibility to overflow.
This returns the low-order (wrapping) bits and the high-order (overflow) bits of the result as two separate values, in that order.
Performs “long multiplication” which takes in an extra amount to add, and may return an additional amount of overflow. This allows for chaining together multiple multiplications to create “big integers” which represent larger values.
If you don’t need the carry
, then you can use Self::widening_mul
instead.
Examples
Basic usage:
Please note that this example is shared between integer types.
Which explains why u32
is used here.
#![feature(bigint_helper_methods)]
assert_eq!(5u32.carrying_mul(2, 0), (10, 0));
assert_eq!(5u32.carrying_mul(2, 10), (20, 0));
assert_eq!(1_000_000_000u32.carrying_mul(10, 0), (1410065408, 2));
assert_eq!(1_000_000_000u32.carrying_mul(10, 10), (1410065418, 2));
assert_eq!(u8::MAX.carrying_mul(u8::MAX, u8::MAX), (0, u8::MAX));
RunThis is the core operation needed for scalar multiplication when implementing it for wider-than-native types.
#![feature(bigint_helper_methods)]
fn scalar_mul_eq(little_endian_digits: &mut Vec<u16>, multiplicand: u16) {
let mut carry = 0;
for d in little_endian_digits.iter_mut() {
(*d, carry) = d.carrying_mul(multiplicand, carry);
}
if carry != 0 {
little_endian_digits.push(carry);
}
}
let mut v = vec![10, 20];
scalar_mul_eq(&mut v, 3);
assert_eq!(v, [30, 60]);
assert_eq!(0x87654321_u64 * 0xFEED, 0x86D3D159E38D);
let mut v = vec![0x4321, 0x8765];
scalar_mul_eq(&mut v, 0xFEED);
assert_eq!(v, [0xE38D, 0xD159, 0x86D3]);
RunIf carry
is zero, this is similar to overflowing_mul
,
except that it gives the value of the overflow instead of just whether one happened:
#![feature(bigint_helper_methods)]
let r = u8::carrying_mul(7, 13, 0);
assert_eq!((r.0, r.1 != 0), u8::overflowing_mul(7, 13));
let r = u8::carrying_mul(13, 42, 0);
assert_eq!((r.0, r.1 != 0), u8::overflowing_mul(13, 42));
RunThe value of the first field in the returned tuple matches what you’d get
by combining the wrapping_mul
and
wrapping_add
methods:
#![feature(bigint_helper_methods)]
assert_eq!(
789_u16.carrying_mul(456, 123).0,
789_u16.wrapping_mul(456).wrapping_add(123),
);
Run1.23.0 (const: 1.52.0) · sourcepub const fn to_ascii_uppercase(&self) -> u8
pub const fn to_ascii_uppercase(&self) -> u8
Makes a copy of the value in its ASCII upper case equivalent.
ASCII letters ‘a’ to ‘z’ are mapped to ‘A’ to ‘Z’, but non-ASCII letters are unchanged.
To uppercase the value in-place, use make_ascii_uppercase
.
Examples
let lowercase_a = 97u8;
assert_eq!(65, lowercase_a.to_ascii_uppercase());
Run1.23.0 (const: 1.52.0) · sourcepub const fn to_ascii_lowercase(&self) -> u8
pub const fn to_ascii_lowercase(&self) -> u8
Makes a copy of the value in its ASCII lower case equivalent.
ASCII letters ‘A’ to ‘Z’ are mapped to ‘a’ to ‘z’, but non-ASCII letters are unchanged.
To lowercase the value in-place, use make_ascii_lowercase
.
Examples
let uppercase_a = 65u8;
assert_eq!(97, uppercase_a.to_ascii_lowercase());
Run1.23.0 (const: 1.52.0) · sourcepub const fn eq_ignore_ascii_case(&self, other: &u8) -> bool
pub const fn eq_ignore_ascii_case(&self, other: &u8) -> bool
1.23.0 · sourcepub fn make_ascii_uppercase(&mut self)
pub fn make_ascii_uppercase(&mut self)
Converts this value to its ASCII upper case equivalent in-place.
ASCII letters ‘a’ to ‘z’ are mapped to ‘A’ to ‘Z’, but non-ASCII letters are unchanged.
To return a new uppercased value without modifying the existing one, use
to_ascii_uppercase
.
Examples
let mut byte = b'a';
byte.make_ascii_uppercase();
assert_eq!(b'A', byte);
Run1.23.0 · sourcepub fn make_ascii_lowercase(&mut self)
pub fn make_ascii_lowercase(&mut self)
Converts this value to its ASCII lower case equivalent in-place.
ASCII letters ‘A’ to ‘Z’ are mapped to ‘a’ to ‘z’, but non-ASCII letters are unchanged.
To return a new lowercased value without modifying the existing one, use
to_ascii_lowercase
.
Examples
let mut byte = b'A';
byte.make_ascii_lowercase();
assert_eq!(b'a', byte);
Run1.24.0 (const: 1.47.0) · sourcepub const fn is_ascii_alphabetic(&self) -> bool
pub const fn is_ascii_alphabetic(&self) -> bool
Checks if the value is an ASCII alphabetic character:
- U+0041 ‘A’ ..= U+005A ‘Z’, or
- U+0061 ‘a’ ..= U+007A ‘z’.
Examples
let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';
assert!(uppercase_a.is_ascii_alphabetic());
assert!(uppercase_g.is_ascii_alphabetic());
assert!(a.is_ascii_alphabetic());
assert!(g.is_ascii_alphabetic());
assert!(!zero.is_ascii_alphabetic());
assert!(!percent.is_ascii_alphabetic());
assert!(!space.is_ascii_alphabetic());
assert!(!lf.is_ascii_alphabetic());
assert!(!esc.is_ascii_alphabetic());
Run1.24.0 (const: 1.47.0) · sourcepub const fn is_ascii_uppercase(&self) -> bool
pub const fn is_ascii_uppercase(&self) -> bool
Checks if the value is an ASCII uppercase character: U+0041 ‘A’ ..= U+005A ‘Z’.
Examples
let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';
assert!(uppercase_a.is_ascii_uppercase());
assert!(uppercase_g.is_ascii_uppercase());
assert!(!a.is_ascii_uppercase());
assert!(!g.is_ascii_uppercase());
assert!(!zero.is_ascii_uppercase());
assert!(!percent.is_ascii_uppercase());
assert!(!space.is_ascii_uppercase());
assert!(!lf.is_ascii_uppercase());
assert!(!esc.is_ascii_uppercase());
Run1.24.0 (const: 1.47.0) · sourcepub const fn is_ascii_lowercase(&self) -> bool
pub const fn is_ascii_lowercase(&self) -> bool
Checks if the value is an ASCII lowercase character: U+0061 ‘a’ ..= U+007A ‘z’.
Examples
let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';
assert!(!uppercase_a.is_ascii_lowercase());
assert!(!uppercase_g.is_ascii_lowercase());
assert!(a.is_ascii_lowercase());
assert!(g.is_ascii_lowercase());
assert!(!zero.is_ascii_lowercase());
assert!(!percent.is_ascii_lowercase());
assert!(!space.is_ascii_lowercase());
assert!(!lf.is_ascii_lowercase());
assert!(!esc.is_ascii_lowercase());
Run1.24.0 (const: 1.47.0) · sourcepub const fn is_ascii_alphanumeric(&self) -> bool
pub const fn is_ascii_alphanumeric(&self) -> bool
Checks if the value is an ASCII alphanumeric character:
- U+0041 ‘A’ ..= U+005A ‘Z’, or
- U+0061 ‘a’ ..= U+007A ‘z’, or
- U+0030 ‘0’ ..= U+0039 ‘9’.
Examples
let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';
assert!(uppercase_a.is_ascii_alphanumeric());
assert!(uppercase_g.is_ascii_alphanumeric());
assert!(a.is_ascii_alphanumeric());
assert!(g.is_ascii_alphanumeric());
assert!(zero.is_ascii_alphanumeric());
assert!(!percent.is_ascii_alphanumeric());
assert!(!space.is_ascii_alphanumeric());
assert!(!lf.is_ascii_alphanumeric());
assert!(!esc.is_ascii_alphanumeric());
Run1.24.0 (const: 1.47.0) · sourcepub const fn is_ascii_digit(&self) -> bool
pub const fn is_ascii_digit(&self) -> bool
Checks if the value is an ASCII decimal digit: U+0030 ‘0’ ..= U+0039 ‘9’.
Examples
let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';
assert!(!uppercase_a.is_ascii_digit());
assert!(!uppercase_g.is_ascii_digit());
assert!(!a.is_ascii_digit());
assert!(!g.is_ascii_digit());
assert!(zero.is_ascii_digit());
assert!(!percent.is_ascii_digit());
assert!(!space.is_ascii_digit());
assert!(!lf.is_ascii_digit());
assert!(!esc.is_ascii_digit());
Runconst: unstable · sourcepub fn is_ascii_octdigit(&self) -> bool
🔬This is a nightly-only experimental API. (is_ascii_octdigit
#101288)
pub fn is_ascii_octdigit(&self) -> bool
is_ascii_octdigit
#101288)Checks if the value is an ASCII octal digit: U+0030 ‘0’ ..= U+0037 ‘7’.
Examples
#![feature(is_ascii_octdigit)]
let uppercase_a = b'A';
let a = b'a';
let zero = b'0';
let seven = b'7';
let nine = b'9';
let percent = b'%';
let lf = b'\n';
assert!(!uppercase_a.is_ascii_octdigit());
assert!(!a.is_ascii_octdigit());
assert!(zero.is_ascii_octdigit());
assert!(seven.is_ascii_octdigit());
assert!(!nine.is_ascii_octdigit());
assert!(!percent.is_ascii_octdigit());
assert!(!lf.is_ascii_octdigit());
Run1.24.0 (const: 1.47.0) · sourcepub const fn is_ascii_hexdigit(&self) -> bool
pub const fn is_ascii_hexdigit(&self) -> bool
Checks if the value is an ASCII hexadecimal digit:
- U+0030 ‘0’ ..= U+0039 ‘9’, or
- U+0041 ‘A’ ..= U+0046 ‘F’, or
- U+0061 ‘a’ ..= U+0066 ‘f’.
Examples
let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';
assert!(uppercase_a.is_ascii_hexdigit());
assert!(!uppercase_g.is_ascii_hexdigit());
assert!(a.is_ascii_hexdigit());
assert!(!g.is_ascii_hexdigit());
assert!(zero.is_ascii_hexdigit());
assert!(!percent.is_ascii_hexdigit());
assert!(!space.is_ascii_hexdigit());
assert!(!lf.is_ascii_hexdigit());
assert!(!esc.is_ascii_hexdigit());
Run1.24.0 (const: 1.47.0) · sourcepub const fn is_ascii_punctuation(&self) -> bool
pub const fn is_ascii_punctuation(&self) -> bool
Checks if the value is an ASCII punctuation character:
- U+0021 ..= U+002F
! " # $ % & ' ( ) * + , - . /
, or - U+003A ..= U+0040
: ; < = > ? @
, or - U+005B ..= U+0060
[ \ ] ^ _ `
, or - U+007B ..= U+007E
{ | } ~
Examples
let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';
assert!(!uppercase_a.is_ascii_punctuation());
assert!(!uppercase_g.is_ascii_punctuation());
assert!(!a.is_ascii_punctuation());
assert!(!g.is_ascii_punctuation());
assert!(!zero.is_ascii_punctuation());
assert!(percent.is_ascii_punctuation());
assert!(!space.is_ascii_punctuation());
assert!(!lf.is_ascii_punctuation());
assert!(!esc.is_ascii_punctuation());
Run1.24.0 (const: 1.47.0) · sourcepub const fn is_ascii_graphic(&self) -> bool
pub const fn is_ascii_graphic(&self) -> bool
Checks if the value is an ASCII graphic character: U+0021 ‘!’ ..= U+007E ‘~’.
Examples
let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';
assert!(uppercase_a.is_ascii_graphic());
assert!(uppercase_g.is_ascii_graphic());
assert!(a.is_ascii_graphic());
assert!(g.is_ascii_graphic());
assert!(zero.is_ascii_graphic());
assert!(percent.is_ascii_graphic());
assert!(!space.is_ascii_graphic());
assert!(!lf.is_ascii_graphic());
assert!(!esc.is_ascii_graphic());
Run1.24.0 (const: 1.47.0) · sourcepub const fn is_ascii_whitespace(&self) -> bool
pub const fn is_ascii_whitespace(&self) -> bool
Checks if the value is an ASCII whitespace character: U+0020 SPACE, U+0009 HORIZONTAL TAB, U+000A LINE FEED, U+000C FORM FEED, or U+000D CARRIAGE RETURN.
Rust uses the WhatWG Infra Standard’s definition of ASCII whitespace. There are several other definitions in wide use. For instance, the POSIX locale includes U+000B VERTICAL TAB as well as all the above characters, but—from the very same specification—the default rule for “field splitting” in the Bourne shell considers only SPACE, HORIZONTAL TAB, and LINE FEED as whitespace.
If you are writing a program that will process an existing file format, check what that format’s definition of whitespace is before using this function.
Examples
let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';
assert!(!uppercase_a.is_ascii_whitespace());
assert!(!uppercase_g.is_ascii_whitespace());
assert!(!a.is_ascii_whitespace());
assert!(!g.is_ascii_whitespace());
assert!(!zero.is_ascii_whitespace());
assert!(!percent.is_ascii_whitespace());
assert!(space.is_ascii_whitespace());
assert!(lf.is_ascii_whitespace());
assert!(!esc.is_ascii_whitespace());
Run1.24.0 (const: 1.47.0) · sourcepub const fn is_ascii_control(&self) -> bool
pub const fn is_ascii_control(&self) -> bool
Checks if the value is an ASCII control character: U+0000 NUL ..= U+001F UNIT SEPARATOR, or U+007F DELETE. Note that most ASCII whitespace characters are control characters, but SPACE is not.
Examples
let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';
assert!(!uppercase_a.is_ascii_control());
assert!(!uppercase_g.is_ascii_control());
assert!(!a.is_ascii_control());
assert!(!g.is_ascii_control());
assert!(!zero.is_ascii_control());
assert!(!percent.is_ascii_control());
assert!(!space.is_ascii_control());
assert!(lf.is_ascii_control());
assert!(esc.is_ascii_control());
Run1.60.0 · sourcepub fn escape_ascii(self) -> EscapeDefault ⓘ
pub fn escape_ascii(self) -> EscapeDefault ⓘ
Returns an iterator that produces an escaped version of a u8
,
treating it as an ASCII character.
The behavior is identical to ascii::escape_default
.
Examples
assert_eq!("0", b'0'.escape_ascii().to_string());
assert_eq!("\\t", b'\t'.escape_ascii().to_string());
assert_eq!("\\r", b'\r'.escape_ascii().to_string());
assert_eq!("\\n", b'\n'.escape_ascii().to_string());
assert_eq!("\\'", b'\''.escape_ascii().to_string());
assert_eq!("\\\"", b'"'.escape_ascii().to_string());
assert_eq!("\\\\", b'\\'.escape_ascii().to_string());
assert_eq!("\\x9d", b'\x9d'.escape_ascii().to_string());
RunTrait Implementations
1.22.0 · sourceimpl AddAssign<&u8> for Saturating<u8>
impl AddAssign<&u8> for Saturating<u8>
sourcefn add_assign(&mut self, other: &u8)
fn add_assign(&mut self, other: &u8)
+=
operation. Read more1.22.0 (const: unstable) · sourceimpl AddAssign<&u8> for Wrapping<u8>
impl AddAssign<&u8> for Wrapping<u8>
const: unstable · sourcefn add_assign(&mut self, other: &u8)
fn add_assign(&mut self, other: &u8)
+=
operation. Read more1.22.0 (const: unstable) · sourceimpl AddAssign<&u8> for u8
impl AddAssign<&u8> for u8
const: unstable · sourcefn add_assign(&mut self, other: &u8)
fn add_assign(&mut self, other: &u8)
+=
operation. Read moresourceimpl AddAssign<u8> for Saturating<u8>
impl AddAssign<u8> for Saturating<u8>
sourcefn add_assign(&mut self, other: u8)
fn add_assign(&mut self, other: u8)
+=
operation. Read more1.60.0 (const: unstable) · sourceimpl AddAssign<u8> for Wrapping<u8>
impl AddAssign<u8> for Wrapping<u8>
const: unstable · sourcefn add_assign(&mut self, other: u8)
fn add_assign(&mut self, other: u8)
+=
operation. Read more1.8.0 (const: unstable) · sourceimpl AddAssign<u8> for u8
impl AddAssign<u8> for u8
const: unstable · sourcefn add_assign(&mut self, other: u8)
fn add_assign(&mut self, other: u8)
+=
operation. Read more1.22.0 · sourceimpl BitAndAssign<&u8> for Saturating<u8>
impl BitAndAssign<&u8> for Saturating<u8>
sourcefn bitand_assign(&mut self, other: &u8)
fn bitand_assign(&mut self, other: &u8)
&=
operation. Read more1.22.0 (const: unstable) · sourceimpl BitAndAssign<&u8> for Wrapping<u8>
impl BitAndAssign<&u8> for Wrapping<u8>
const: unstable · sourcefn bitand_assign(&mut self, other: &u8)
fn bitand_assign(&mut self, other: &u8)
&=
operation. Read more1.22.0 (const: unstable) · sourceimpl BitAndAssign<&u8> for u8
impl BitAndAssign<&u8> for u8
const: unstable · sourcefn bitand_assign(&mut self, other: &u8)
fn bitand_assign(&mut self, other: &u8)
&=
operation. Read moresourceimpl BitAndAssign<u8> for Saturating<u8>
impl BitAndAssign<u8> for Saturating<u8>
sourcefn bitand_assign(&mut self, other: u8)
fn bitand_assign(&mut self, other: u8)
&=
operation. Read more1.60.0 (const: unstable) · sourceimpl BitAndAssign<u8> for Wrapping<u8>
impl BitAndAssign<u8> for Wrapping<u8>
const: unstable · sourcefn bitand_assign(&mut self, other: u8)
fn bitand_assign(&mut self, other: u8)
&=
operation. Read more1.8.0 (const: unstable) · sourceimpl BitAndAssign<u8> for u8
impl BitAndAssign<u8> for u8
const: unstable · sourcefn bitand_assign(&mut self, other: u8)
fn bitand_assign(&mut self, other: u8)
&=
operation. Read more1.22.0 · sourceimpl BitOrAssign<&u8> for Saturating<u8>
impl BitOrAssign<&u8> for Saturating<u8>
sourcefn bitor_assign(&mut self, other: &u8)
fn bitor_assign(&mut self, other: &u8)
|=
operation. Read more1.22.0 (const: unstable) · sourceimpl BitOrAssign<&u8> for Wrapping<u8>
impl BitOrAssign<&u8> for Wrapping<u8>
const: unstable · sourcefn bitor_assign(&mut self, other: &u8)
fn bitor_assign(&mut self, other: &u8)
|=
operation. Read more1.22.0 (const: unstable) · sourceimpl BitOrAssign<&u8> for u8
impl BitOrAssign<&u8> for u8
const: unstable · sourcefn bitor_assign(&mut self, other: &u8)
fn bitor_assign(&mut self, other: &u8)
|=
operation. Read more1.45.0 (const: unstable) · sourceimpl BitOrAssign<u8> for NonZeroU8
impl BitOrAssign<u8> for NonZeroU8
const: unstable · sourcefn bitor_assign(&mut self, rhs: u8)
fn bitor_assign(&mut self, rhs: u8)
|=
operation. Read moresourceimpl BitOrAssign<u8> for Saturating<u8>
impl BitOrAssign<u8> for Saturating<u8>
sourcefn bitor_assign(&mut self, other: u8)
fn bitor_assign(&mut self, other: u8)
|=
operation. Read more1.60.0 (const: unstable) · sourceimpl BitOrAssign<u8> for Wrapping<u8>
impl BitOrAssign<u8> for Wrapping<u8>
const: unstable · sourcefn bitor_assign(&mut self, other: u8)
fn bitor_assign(&mut self, other: u8)
|=
operation. Read more1.8.0 (const: unstable) · sourceimpl BitOrAssign<u8> for u8
impl BitOrAssign<u8> for u8
const: unstable · sourcefn bitor_assign(&mut self, other: u8)
fn bitor_assign(&mut self, other: u8)
|=
operation. Read more1.22.0 · sourceimpl BitXorAssign<&u8> for Saturating<u8>
impl BitXorAssign<&u8> for Saturating<u8>
sourcefn bitxor_assign(&mut self, other: &u8)
fn bitxor_assign(&mut self, other: &u8)
^=
operation. Read more1.22.0 (const: unstable) · sourceimpl BitXorAssign<&u8> for Wrapping<u8>
impl BitXorAssign<&u8> for Wrapping<u8>
const: unstable · sourcefn bitxor_assign(&mut self, other: &u8)
fn bitxor_assign(&mut self, other: &u8)
^=
operation. Read more1.22.0 (const: unstable) · sourceimpl BitXorAssign<&u8> for u8
impl BitXorAssign<&u8> for u8
const: unstable · sourcefn bitxor_assign(&mut self, other: &u8)
fn bitxor_assign(&mut self, other: &u8)
^=
operation. Read moresourceimpl BitXorAssign<u8> for Saturating<u8>
impl BitXorAssign<u8> for Saturating<u8>
sourcefn bitxor_assign(&mut self, other: u8)
fn bitxor_assign(&mut self, other: u8)
^=
operation. Read more1.60.0 (const: unstable) · sourceimpl BitXorAssign<u8> for Wrapping<u8>
impl BitXorAssign<u8> for Wrapping<u8>
const: unstable · sourcefn bitxor_assign(&mut self, other: u8)
fn bitxor_assign(&mut self, other: u8)
^=
operation. Read more1.8.0 (const: unstable) · sourceimpl BitXorAssign<u8> for u8
impl BitXorAssign<u8> for u8
const: unstable · sourcefn bitxor_assign(&mut self, other: u8)
fn bitxor_assign(&mut self, other: u8)
^=
operation. Read moreconst: unstable · sourceimpl Div<u8> for u8
impl Div<u8> for u8
This operation rounds towards zero, truncating any fractional part of the exact result.
Panics
This operation will panic if other == 0
.
1.22.0 · sourceimpl DivAssign<&u8> for Saturating<u8>
impl DivAssign<&u8> for Saturating<u8>
sourcefn div_assign(&mut self, other: &u8)
fn div_assign(&mut self, other: &u8)
/=
operation. Read more1.22.0 (const: unstable) · sourceimpl DivAssign<&u8> for Wrapping<u8>
impl DivAssign<&u8> for Wrapping<u8>
const: unstable · sourcefn div_assign(&mut self, other: &u8)
fn div_assign(&mut self, other: &u8)
/=
operation. Read more1.22.0 (const: unstable) · sourceimpl DivAssign<&u8> for u8
impl DivAssign<&u8> for u8
const: unstable · sourcefn div_assign(&mut self, other: &u8)
fn div_assign(&mut self, other: &u8)
/=
operation. Read moresourceimpl DivAssign<u8> for Saturating<u8>
impl DivAssign<u8> for Saturating<u8>
sourcefn div_assign(&mut self, other: u8)
fn div_assign(&mut self, other: u8)
/=
operation. Read more1.60.0 (const: unstable) · sourceimpl DivAssign<u8> for Wrapping<u8>
impl DivAssign<u8> for Wrapping<u8>
const: unstable · sourcefn div_assign(&mut self, other: u8)
fn div_assign(&mut self, other: u8)
/=
operation. Read more1.8.0 (const: unstable) · sourceimpl DivAssign<u8> for u8
impl DivAssign<u8> for u8
const: unstable · sourcefn div_assign(&mut self, other: u8)
fn div_assign(&mut self, other: u8)
/=
operation. Read more1.13.0 (const: unstable) · sourceimpl From<u8> for char
impl From<u8> for char
Maps a byte in 0x00..=0xFF to a char
whose code point has the same value, in U+0000..=U+00FF.
Unicode is designed such that this effectively decodes bytes with the character encoding that IANA calls ISO-8859-1. This encoding is compatible with ASCII.
Note that this is different from ISO/IEC 8859-1 a.k.a. ISO 8859-1 (with one less hyphen), which leaves some “blanks”, byte values that are not assigned to any character. ISO-8859-1 (the IANA one) assigns them to the C0 and C1 control codes.
Note that this is also different from Windows-1252 a.k.a. code page 1252, which is a superset ISO/IEC 8859-1 that assigns some (not all!) blanks to punctuation and various Latin characters.
To confuse things further, on the Web
ascii
, iso-8859-1
, and windows-1252
are all aliases
for a superset of Windows-1252 that fills the remaining blanks with corresponding
C0 and C1 control codes.
sourceimpl FromStr for u8
impl FromStr for u8
type Err = ParseIntError
type Err = ParseIntError
1.22.0 · sourceimpl MulAssign<&u8> for Saturating<u8>
impl MulAssign<&u8> for Saturating<u8>
sourcefn mul_assign(&mut self, other: &u8)
fn mul_assign(&mut self, other: &u8)
*=
operation. Read more1.22.0 (const: unstable) · sourceimpl MulAssign<&u8> for Wrapping<u8>
impl MulAssign<&u8> for Wrapping<u8>
const: unstable · sourcefn mul_assign(&mut self, other: &u8)
fn mul_assign(&mut self, other: &u8)
*=
operation. Read more1.22.0 (const: unstable) · sourceimpl MulAssign<&u8> for u8
impl MulAssign<&u8> for u8
const: unstable · sourcefn mul_assign(&mut self, other: &u8)
fn mul_assign(&mut self, other: &u8)
*=
operation. Read moresourceimpl MulAssign<u8> for Saturating<u8>
impl MulAssign<u8> for Saturating<u8>
sourcefn mul_assign(&mut self, other: u8)
fn mul_assign(&mut self, other: u8)
*=
operation. Read more1.60.0 (const: unstable) · sourceimpl MulAssign<u8> for Wrapping<u8>
impl MulAssign<u8> for Wrapping<u8>
const: unstable · sourcefn mul_assign(&mut self, other: u8)
fn mul_assign(&mut self, other: u8)
*=
operation. Read more1.8.0 (const: unstable) · sourceimpl MulAssign<u8> for u8
impl MulAssign<u8> for u8
const: unstable · sourcefn mul_assign(&mut self, other: u8)
fn mul_assign(&mut self, other: u8)
*=
operation. Read moreconst: unstable · sourceimpl Ord for u8
impl Ord for u8
1.21.0 · sourcefn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
1.21.0 · sourcefn min(self, other: Self) -> Selfwhere
Self: Sized,
fn min(self, other: Self) -> Selfwhere
Self: Sized,
1.50.0 · sourcefn clamp(self, min: Self, max: Self) -> Selfwhere
Self: Sized,
Self: PartialOrd,
fn clamp(self, min: Self, max: Self) -> Selfwhere
Self: Sized,
Self: PartialOrd,
const: unstable · sourceimpl PartialEq<u8> for u8
impl PartialEq<u8> for u8
const: unstable · sourceimpl PartialOrd<u8> for u8
impl PartialOrd<u8> for u8
const: unstable · sourcefn le(&self, other: &u8) -> bool
fn le(&self, other: &u8) -> bool
self
and other
) and is used by the <=
operator. Read moreconst: unstable · sourceimpl Rem<u8> for u8
impl Rem<u8> for u8
This operation satisfies n % d == n - (n / d) * d
. The
result has the same sign as the left operand.
Panics
This operation will panic if other == 0
.
1.22.0 · sourceimpl RemAssign<&u8> for Saturating<u8>
impl RemAssign<&u8> for Saturating<u8>
sourcefn rem_assign(&mut self, other: &u8)
fn rem_assign(&mut self, other: &u8)
%=
operation. Read more1.22.0 (const: unstable) · sourceimpl RemAssign<&u8> for Wrapping<u8>
impl RemAssign<&u8> for Wrapping<u8>
const: unstable · sourcefn rem_assign(&mut self, other: &u8)
fn rem_assign(&mut self, other: &u8)
%=
operation. Read more1.22.0 (const: unstable) · sourceimpl RemAssign<&u8> for u8
impl RemAssign<&u8> for u8
const: unstable · sourcefn rem_assign(&mut self, other: &u8)
fn rem_assign(&mut self, other: &u8)
%=
operation. Read moresourceimpl RemAssign<u8> for Saturating<u8>
impl RemAssign<u8> for Saturating<u8>
sourcefn rem_assign(&mut self, other: u8)
fn rem_assign(&mut self, other: u8)
%=
operation. Read more1.60.0 (const: unstable) · sourceimpl RemAssign<u8> for Wrapping<u8>
impl RemAssign<u8> for Wrapping<u8>
const: unstable · sourcefn rem_assign(&mut self, other: u8)
fn rem_assign(&mut self, other: u8)
%=
operation. Read more1.8.0 (const: unstable) · sourceimpl RemAssign<u8> for u8
impl RemAssign<u8> for u8
const: unstable · sourcefn rem_assign(&mut self, other: u8)
fn rem_assign(&mut self, other: u8)
%=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&i128> for u8
impl ShlAssign<&i128> for u8
const: unstable · sourcefn shl_assign(&mut self, other: &i128)
fn shl_assign(&mut self, other: &i128)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&i16> for u8
impl ShlAssign<&i16> for u8
const: unstable · sourcefn shl_assign(&mut self, other: &i16)
fn shl_assign(&mut self, other: &i16)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&i32> for u8
impl ShlAssign<&i32> for u8
const: unstable · sourcefn shl_assign(&mut self, other: &i32)
fn shl_assign(&mut self, other: &i32)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&i64> for u8
impl ShlAssign<&i64> for u8
const: unstable · sourcefn shl_assign(&mut self, other: &i64)
fn shl_assign(&mut self, other: &i64)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&i8> for u8
impl ShlAssign<&i8> for u8
const: unstable · sourcefn shl_assign(&mut self, other: &i8)
fn shl_assign(&mut self, other: &i8)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&isize> for u8
impl ShlAssign<&isize> for u8
const: unstable · sourcefn shl_assign(&mut self, other: &isize)
fn shl_assign(&mut self, other: &isize)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u128> for u8
impl ShlAssign<&u128> for u8
const: unstable · sourcefn shl_assign(&mut self, other: &u128)
fn shl_assign(&mut self, other: &u128)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u16> for u8
impl ShlAssign<&u16> for u8
const: unstable · sourcefn shl_assign(&mut self, other: &u16)
fn shl_assign(&mut self, other: &u16)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u32> for u8
impl ShlAssign<&u32> for u8
const: unstable · sourcefn shl_assign(&mut self, other: &u32)
fn shl_assign(&mut self, other: &u32)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u64> for u8
impl ShlAssign<&u64> for u8
const: unstable · sourcefn shl_assign(&mut self, other: &u64)
fn shl_assign(&mut self, other: &u64)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u8> for i128
impl ShlAssign<&u8> for i128
const: unstable · sourcefn shl_assign(&mut self, other: &u8)
fn shl_assign(&mut self, other: &u8)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u8> for i16
impl ShlAssign<&u8> for i16
const: unstable · sourcefn shl_assign(&mut self, other: &u8)
fn shl_assign(&mut self, other: &u8)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u8> for i32
impl ShlAssign<&u8> for i32
const: unstable · sourcefn shl_assign(&mut self, other: &u8)
fn shl_assign(&mut self, other: &u8)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u8> for i64
impl ShlAssign<&u8> for i64
const: unstable · sourcefn shl_assign(&mut self, other: &u8)
fn shl_assign(&mut self, other: &u8)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u8> for i8
impl ShlAssign<&u8> for i8
const: unstable · sourcefn shl_assign(&mut self, other: &u8)
fn shl_assign(&mut self, other: &u8)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u8> for isize
impl ShlAssign<&u8> for isize
const: unstable · sourcefn shl_assign(&mut self, other: &u8)
fn shl_assign(&mut self, other: &u8)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u8> for u128
impl ShlAssign<&u8> for u128
const: unstable · sourcefn shl_assign(&mut self, other: &u8)
fn shl_assign(&mut self, other: &u8)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u8> for u16
impl ShlAssign<&u8> for u16
const: unstable · sourcefn shl_assign(&mut self, other: &u8)
fn shl_assign(&mut self, other: &u8)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u8> for u32
impl ShlAssign<&u8> for u32
const: unstable · sourcefn shl_assign(&mut self, other: &u8)
fn shl_assign(&mut self, other: &u8)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u8> for u64
impl ShlAssign<&u8> for u64
const: unstable · sourcefn shl_assign(&mut self, other: &u8)
fn shl_assign(&mut self, other: &u8)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u8> for u8
impl ShlAssign<&u8> for u8
const: unstable · sourcefn shl_assign(&mut self, other: &u8)
fn shl_assign(&mut self, other: &u8)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&u8> for usize
impl ShlAssign<&u8> for usize
const: unstable · sourcefn shl_assign(&mut self, other: &u8)
fn shl_assign(&mut self, other: &u8)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShlAssign<&usize> for u8
impl ShlAssign<&usize> for u8
const: unstable · sourcefn shl_assign(&mut self, other: &usize)
fn shl_assign(&mut self, other: &usize)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<i128> for u8
impl ShlAssign<i128> for u8
const: unstable · sourcefn shl_assign(&mut self, other: i128)
fn shl_assign(&mut self, other: i128)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<i16> for u8
impl ShlAssign<i16> for u8
const: unstable · sourcefn shl_assign(&mut self, other: i16)
fn shl_assign(&mut self, other: i16)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<i32> for u8
impl ShlAssign<i32> for u8
const: unstable · sourcefn shl_assign(&mut self, other: i32)
fn shl_assign(&mut self, other: i32)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<i64> for u8
impl ShlAssign<i64> for u8
const: unstable · sourcefn shl_assign(&mut self, other: i64)
fn shl_assign(&mut self, other: i64)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<i8> for u8
impl ShlAssign<i8> for u8
const: unstable · sourcefn shl_assign(&mut self, other: i8)
fn shl_assign(&mut self, other: i8)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<isize> for u8
impl ShlAssign<isize> for u8
const: unstable · sourcefn shl_assign(&mut self, other: isize)
fn shl_assign(&mut self, other: isize)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u128> for u8
impl ShlAssign<u128> for u8
const: unstable · sourcefn shl_assign(&mut self, other: u128)
fn shl_assign(&mut self, other: u128)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u16> for u8
impl ShlAssign<u16> for u8
const: unstable · sourcefn shl_assign(&mut self, other: u16)
fn shl_assign(&mut self, other: u16)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u32> for u8
impl ShlAssign<u32> for u8
const: unstable · sourcefn shl_assign(&mut self, other: u32)
fn shl_assign(&mut self, other: u32)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u64> for u8
impl ShlAssign<u64> for u8
const: unstable · sourcefn shl_assign(&mut self, other: u64)
fn shl_assign(&mut self, other: u64)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u8> for i128
impl ShlAssign<u8> for i128
const: unstable · sourcefn shl_assign(&mut self, other: u8)
fn shl_assign(&mut self, other: u8)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u8> for i16
impl ShlAssign<u8> for i16
const: unstable · sourcefn shl_assign(&mut self, other: u8)
fn shl_assign(&mut self, other: u8)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u8> for i32
impl ShlAssign<u8> for i32
const: unstable · sourcefn shl_assign(&mut self, other: u8)
fn shl_assign(&mut self, other: u8)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u8> for i64
impl ShlAssign<u8> for i64
const: unstable · sourcefn shl_assign(&mut self, other: u8)
fn shl_assign(&mut self, other: u8)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u8> for i8
impl ShlAssign<u8> for i8
const: unstable · sourcefn shl_assign(&mut self, other: u8)
fn shl_assign(&mut self, other: u8)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u8> for isize
impl ShlAssign<u8> for isize
const: unstable · sourcefn shl_assign(&mut self, other: u8)
fn shl_assign(&mut self, other: u8)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u8> for u128
impl ShlAssign<u8> for u128
const: unstable · sourcefn shl_assign(&mut self, other: u8)
fn shl_assign(&mut self, other: u8)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u8> for u16
impl ShlAssign<u8> for u16
const: unstable · sourcefn shl_assign(&mut self, other: u8)
fn shl_assign(&mut self, other: u8)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u8> for u32
impl ShlAssign<u8> for u32
const: unstable · sourcefn shl_assign(&mut self, other: u8)
fn shl_assign(&mut self, other: u8)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u8> for u64
impl ShlAssign<u8> for u64
const: unstable · sourcefn shl_assign(&mut self, other: u8)
fn shl_assign(&mut self, other: u8)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u8> for u8
impl ShlAssign<u8> for u8
const: unstable · sourcefn shl_assign(&mut self, other: u8)
fn shl_assign(&mut self, other: u8)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<u8> for usize
impl ShlAssign<u8> for usize
const: unstable · sourcefn shl_assign(&mut self, other: u8)
fn shl_assign(&mut self, other: u8)
<<=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShlAssign<usize> for u8
impl ShlAssign<usize> for u8
const: unstable · sourcefn shl_assign(&mut self, other: usize)
fn shl_assign(&mut self, other: usize)
<<=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&i128> for u8
impl ShrAssign<&i128> for u8
const: unstable · sourcefn shr_assign(&mut self, other: &i128)
fn shr_assign(&mut self, other: &i128)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&i16> for u8
impl ShrAssign<&i16> for u8
const: unstable · sourcefn shr_assign(&mut self, other: &i16)
fn shr_assign(&mut self, other: &i16)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&i32> for u8
impl ShrAssign<&i32> for u8
const: unstable · sourcefn shr_assign(&mut self, other: &i32)
fn shr_assign(&mut self, other: &i32)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&i64> for u8
impl ShrAssign<&i64> for u8
const: unstable · sourcefn shr_assign(&mut self, other: &i64)
fn shr_assign(&mut self, other: &i64)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&i8> for u8
impl ShrAssign<&i8> for u8
const: unstable · sourcefn shr_assign(&mut self, other: &i8)
fn shr_assign(&mut self, other: &i8)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&isize> for u8
impl ShrAssign<&isize> for u8
const: unstable · sourcefn shr_assign(&mut self, other: &isize)
fn shr_assign(&mut self, other: &isize)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u128> for u8
impl ShrAssign<&u128> for u8
const: unstable · sourcefn shr_assign(&mut self, other: &u128)
fn shr_assign(&mut self, other: &u128)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u16> for u8
impl ShrAssign<&u16> for u8
const: unstable · sourcefn shr_assign(&mut self, other: &u16)
fn shr_assign(&mut self, other: &u16)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u32> for u8
impl ShrAssign<&u32> for u8
const: unstable · sourcefn shr_assign(&mut self, other: &u32)
fn shr_assign(&mut self, other: &u32)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u64> for u8
impl ShrAssign<&u64> for u8
const: unstable · sourcefn shr_assign(&mut self, other: &u64)
fn shr_assign(&mut self, other: &u64)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u8> for i128
impl ShrAssign<&u8> for i128
const: unstable · sourcefn shr_assign(&mut self, other: &u8)
fn shr_assign(&mut self, other: &u8)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u8> for i16
impl ShrAssign<&u8> for i16
const: unstable · sourcefn shr_assign(&mut self, other: &u8)
fn shr_assign(&mut self, other: &u8)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u8> for i32
impl ShrAssign<&u8> for i32
const: unstable · sourcefn shr_assign(&mut self, other: &u8)
fn shr_assign(&mut self, other: &u8)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u8> for i64
impl ShrAssign<&u8> for i64
const: unstable · sourcefn shr_assign(&mut self, other: &u8)
fn shr_assign(&mut self, other: &u8)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u8> for i8
impl ShrAssign<&u8> for i8
const: unstable · sourcefn shr_assign(&mut self, other: &u8)
fn shr_assign(&mut self, other: &u8)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u8> for isize
impl ShrAssign<&u8> for isize
const: unstable · sourcefn shr_assign(&mut self, other: &u8)
fn shr_assign(&mut self, other: &u8)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u8> for u128
impl ShrAssign<&u8> for u128
const: unstable · sourcefn shr_assign(&mut self, other: &u8)
fn shr_assign(&mut self, other: &u8)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u8> for u16
impl ShrAssign<&u8> for u16
const: unstable · sourcefn shr_assign(&mut self, other: &u8)
fn shr_assign(&mut self, other: &u8)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u8> for u32
impl ShrAssign<&u8> for u32
const: unstable · sourcefn shr_assign(&mut self, other: &u8)
fn shr_assign(&mut self, other: &u8)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u8> for u64
impl ShrAssign<&u8> for u64
const: unstable · sourcefn shr_assign(&mut self, other: &u8)
fn shr_assign(&mut self, other: &u8)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u8> for u8
impl ShrAssign<&u8> for u8
const: unstable · sourcefn shr_assign(&mut self, other: &u8)
fn shr_assign(&mut self, other: &u8)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&u8> for usize
impl ShrAssign<&u8> for usize
const: unstable · sourcefn shr_assign(&mut self, other: &u8)
fn shr_assign(&mut self, other: &u8)
>>=
operation. Read more1.22.0 (const: unstable) · sourceimpl ShrAssign<&usize> for u8
impl ShrAssign<&usize> for u8
const: unstable · sourcefn shr_assign(&mut self, other: &usize)
fn shr_assign(&mut self, other: &usize)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<i128> for u8
impl ShrAssign<i128> for u8
const: unstable · sourcefn shr_assign(&mut self, other: i128)
fn shr_assign(&mut self, other: i128)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<i16> for u8
impl ShrAssign<i16> for u8
const: unstable · sourcefn shr_assign(&mut self, other: i16)
fn shr_assign(&mut self, other: i16)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<i32> for u8
impl ShrAssign<i32> for u8
const: unstable · sourcefn shr_assign(&mut self, other: i32)
fn shr_assign(&mut self, other: i32)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<i64> for u8
impl ShrAssign<i64> for u8
const: unstable · sourcefn shr_assign(&mut self, other: i64)
fn shr_assign(&mut self, other: i64)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<i8> for u8
impl ShrAssign<i8> for u8
const: unstable · sourcefn shr_assign(&mut self, other: i8)
fn shr_assign(&mut self, other: i8)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<isize> for u8
impl ShrAssign<isize> for u8
const: unstable · sourcefn shr_assign(&mut self, other: isize)
fn shr_assign(&mut self, other: isize)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u128> for u8
impl ShrAssign<u128> for u8
const: unstable · sourcefn shr_assign(&mut self, other: u128)
fn shr_assign(&mut self, other: u128)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u16> for u8
impl ShrAssign<u16> for u8
const: unstable · sourcefn shr_assign(&mut self, other: u16)
fn shr_assign(&mut self, other: u16)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u32> for u8
impl ShrAssign<u32> for u8
const: unstable · sourcefn shr_assign(&mut self, other: u32)
fn shr_assign(&mut self, other: u32)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u64> for u8
impl ShrAssign<u64> for u8
const: unstable · sourcefn shr_assign(&mut self, other: u64)
fn shr_assign(&mut self, other: u64)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u8> for i128
impl ShrAssign<u8> for i128
const: unstable · sourcefn shr_assign(&mut self, other: u8)
fn shr_assign(&mut self, other: u8)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u8> for i16
impl ShrAssign<u8> for i16
const: unstable · sourcefn shr_assign(&mut self, other: u8)
fn shr_assign(&mut self, other: u8)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u8> for i32
impl ShrAssign<u8> for i32
const: unstable · sourcefn shr_assign(&mut self, other: u8)
fn shr_assign(&mut self, other: u8)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u8> for i64
impl ShrAssign<u8> for i64
const: unstable · sourcefn shr_assign(&mut self, other: u8)
fn shr_assign(&mut self, other: u8)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u8> for i8
impl ShrAssign<u8> for i8
const: unstable · sourcefn shr_assign(&mut self, other: u8)
fn shr_assign(&mut self, other: u8)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u8> for isize
impl ShrAssign<u8> for isize
const: unstable · sourcefn shr_assign(&mut self, other: u8)
fn shr_assign(&mut self, other: u8)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u8> for u128
impl ShrAssign<u8> for u128
const: unstable · sourcefn shr_assign(&mut self, other: u8)
fn shr_assign(&mut self, other: u8)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u8> for u16
impl ShrAssign<u8> for u16
const: unstable · sourcefn shr_assign(&mut self, other: u8)
fn shr_assign(&mut self, other: u8)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u8> for u32
impl ShrAssign<u8> for u32
const: unstable · sourcefn shr_assign(&mut self, other: u8)
fn shr_assign(&mut self, other: u8)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u8> for u64
impl ShrAssign<u8> for u64
const: unstable · sourcefn shr_assign(&mut self, other: u8)
fn shr_assign(&mut self, other: u8)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u8> for u8
impl ShrAssign<u8> for u8
const: unstable · sourcefn shr_assign(&mut self, other: u8)
fn shr_assign(&mut self, other: u8)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<u8> for usize
impl ShrAssign<u8> for usize
const: unstable · sourcefn shr_assign(&mut self, other: u8)
fn shr_assign(&mut self, other: u8)
>>=
operation. Read more1.8.0 (const: unstable) · sourceimpl ShrAssign<usize> for u8
impl ShrAssign<usize> for u8
const: unstable · sourcefn shr_assign(&mut self, other: usize)
fn shr_assign(&mut self, other: usize)
>>=
operation. Read moresourceimpl SimdElement for u8
impl SimdElement for u8
sourceimpl Step for u8
impl Step for u8
sourceunsafe fn forward_unchecked(start: Self, n: usize) -> Self
unsafe fn forward_unchecked(start: Self, n: usize) -> Self
step_trait
#42168)sourceunsafe fn backward_unchecked(start: Self, n: usize) -> Self
unsafe fn backward_unchecked(start: Self, n: usize) -> Self
step_trait
#42168)sourcefn forward(start: Self, n: usize) -> Self
fn forward(start: Self, n: usize) -> Self
step_trait
#42168)sourcefn backward(start: Self, n: usize) -> Self
fn backward(start: Self, n: usize) -> Self
step_trait
#42168)sourcefn steps_between(start: &Self, end: &Self) -> Option<usize>
fn steps_between(start: &Self, end: &Self) -> Option<usize>
step_trait
#42168)sourcefn forward_checked(start: Self, n: usize) -> Option<Self>
fn forward_checked(start: Self, n: usize) -> Option<Self>
step_trait
#42168)1.22.0 · sourceimpl SubAssign<&u8> for Saturating<u8>
impl SubAssign<&u8> for Saturating<u8>
sourcefn sub_assign(&mut self, other: &u8)
fn sub_assign(&mut self, other: &u8)
-=
operation. Read more1.22.0 (const: unstable) · sourceimpl SubAssign<&u8> for Wrapping<u8>
impl SubAssign<&u8> for Wrapping<u8>
const: unstable · sourcefn sub_assign(&mut self, other: &u8)
fn sub_assign(&mut self, other: &u8)
-=
operation. Read more1.22.0 (const: unstable) · sourceimpl SubAssign<&u8> for u8
impl SubAssign<&u8> for u8
const: unstable · sourcefn sub_assign(&mut self, other: &u8)
fn sub_assign(&mut self, other: &u8)
-=
operation. Read moresourceimpl SubAssign<u8> for Saturating<u8>
impl SubAssign<u8> for Saturating<u8>
sourcefn sub_assign(&mut self, other: u8)
fn sub_assign(&mut self, other: u8)
-=
operation. Read more1.60.0 (const: unstable) · sourceimpl SubAssign<u8> for Wrapping<u8>
impl SubAssign<u8> for Wrapping<u8>
const: unstable · sourcefn sub_assign(&mut self, other: u8)
fn sub_assign(&mut self, other: u8)
-=
operation. Read more1.8.0 (const: unstable) · sourceimpl SubAssign<u8> for u8
impl SubAssign<u8> for u8
const: unstable · sourcefn sub_assign(&mut self, other: u8)
fn sub_assign(&mut self, other: u8)
-=
operation. Read more1.59.0 · sourceimpl TryFrom<char> for u8
impl TryFrom<char> for u8
Map char
with code point in U+0000..=U+00FF to byte in 0x00..=0xFF with same value, failing
if the code point is greater than U+00FF.
See impl From<u8> for char
for details on the encoding.
1.34.0 (const: unstable) · sourceimpl TryFrom<i128> for u8
impl TryFrom<i128> for u8
const: unstable · sourcefn try_from(u: i128) -> Result<Self, Self::Error>
fn try_from(u: i128) -> Result<Self, Self::Error>
Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.
type Error = TryFromIntError
type Error = TryFromIntError
1.34.0 (const: unstable) · sourceimpl TryFrom<i16> for u8
impl TryFrom<i16> for u8
const: unstable · sourcefn try_from(u: i16) -> Result<Self, Self::Error>
fn try_from(u: i16) -> Result<Self, Self::Error>
Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.
type Error = TryFromIntError
type Error = TryFromIntError
1.34.0 (const: unstable) · sourceimpl TryFrom<i32> for u8
impl TryFrom<i32> for u8
const: unstable · sourcefn try_from(u: i32) -> Result<Self, Self::Error>
fn try_from(u: i32) -> Result<Self, Self::Error>
Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.
type Error = TryFromIntError
type Error = TryFromIntError
1.34.0 (const: unstable) · sourceimpl TryFrom<i64> for u8
impl TryFrom<i64> for u8
const: unstable · sourcefn try_from(u: i64) -> Result<Self, Self::Error>
fn try_from(u: i64) -> Result<Self, Self::Error>
Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.
type Error = TryFromIntError
type Error = TryFromIntError
1.34.0 (const: unstable) · sourceimpl TryFrom<i8> for u8
impl TryFrom<i8> for u8
const: unstable · sourcefn try_from(u: i8) -> Result<Self, Self::Error>
fn try_from(u: i8) -> Result<Self, Self::Error>
Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.
type Error = TryFromIntError
type Error = TryFromIntError
1.34.0 (const: unstable) · sourceimpl TryFrom<isize> for u8
impl TryFrom<isize> for u8
const: unstable · sourcefn try_from(u: isize) -> Result<Self, Self::Error>
fn try_from(u: isize) -> Result<Self, Self::Error>
Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.
type Error = TryFromIntError
type Error = TryFromIntError
1.34.0 (const: unstable) · sourceimpl TryFrom<u128> for u8
impl TryFrom<u128> for u8
const: unstable · sourcefn try_from(u: u128) -> Result<Self, Self::Error>
fn try_from(u: u128) -> Result<Self, Self::Error>
Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.
type Error = TryFromIntError
type Error = TryFromIntError
1.34.0 (const: unstable) · sourceimpl TryFrom<u16> for u8
impl TryFrom<u16> for u8
const: unstable · sourcefn try_from(u: u16) -> Result<Self, Self::Error>
fn try_from(u: u16) -> Result<Self, Self::Error>
Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.
type Error = TryFromIntError
type Error = TryFromIntError
1.34.0 (const: unstable) · sourceimpl TryFrom<u32> for u8
impl TryFrom<u32> for u8
const: unstable · sourcefn try_from(u: u32) -> Result<Self, Self::Error>
fn try_from(u: u32) -> Result<Self, Self::Error>
Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.
type Error = TryFromIntError
type Error = TryFromIntError
1.34.0 (const: unstable) · sourceimpl TryFrom<u64> for u8
impl TryFrom<u64> for u8
const: unstable · sourcefn try_from(u: u64) -> Result<Self, Self::Error>
fn try_from(u: u64) -> Result<Self, Self::Error>
Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.
type Error = TryFromIntError
type Error = TryFromIntError
1.34.0 (const: unstable) · sourceimpl TryFrom<u8> for i8
impl TryFrom<u8> for i8
const: unstable · sourcefn try_from(u: u8) -> Result<Self, Self::Error>
fn try_from(u: u8) -> Result<Self, Self::Error>
Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.
type Error = TryFromIntError
type Error = TryFromIntError
1.34.0 (const: unstable) · sourceimpl TryFrom<usize> for u8
impl TryFrom<usize> for u8
const: unstable · sourcefn try_from(u: usize) -> Result<Self, Self::Error>
fn try_from(u: usize) -> Result<Self, Self::Error>
Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.