std::fmt

Trait Debug

1.0.0 · source
pub trait Debug {
    // Required method
    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>;
}
Expand description

? formatting.

Debug should format the output in a programmer-facing, debugging context.

Generally speaking, you should just derive a Debug implementation.

When used with the alternate format specifier #?, the output is pretty-printed.

For more information on formatters, see the module-level documentation.

This trait can be used with #[derive] if all fields implement Debug. When derived for structs, it will use the name of the struct, then {, then a comma-separated list of each field’s name and Debug value, then }. For enums, it will use the name of the variant and, if applicable, (, then the Debug values of the fields, then ).

§Stability

Derived Debug formats are not stable, and so may change with future Rust versions. Additionally, Debug implementations of types provided by the standard library (std, core, alloc, etc.) are not stable, and may also change with future Rust versions.

§Examples

Deriving an implementation:

#[derive(Debug)]
struct Point {
    x: i32,
    y: i32,
}

let origin = Point { x: 0, y: 0 };

assert_eq!(
    format!("The origin is: {origin:?}"),
    "The origin is: Point { x: 0, y: 0 }",
);

Manually implementing:

use std::fmt;

struct Point {
    x: i32,
    y: i32,
}

impl fmt::Debug for Point {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("Point")
         .field("x", &self.x)
         .field("y", &self.y)
         .finish()
    }
}

let origin = Point { x: 0, y: 0 };

assert_eq!(
    format!("The origin is: {origin:?}"),
    "The origin is: Point { x: 0, y: 0 }",
);

There are a number of helper methods on the Formatter struct to help you with manual implementations, such as debug_struct.

Types that do not wish to use the standard suite of debug representations provided by the Formatter trait (debug_struct, debug_tuple, debug_list, debug_set, debug_map) can do something totally custom by manually writing an arbitrary representation to the Formatter.

impl fmt::Debug for Point {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "Point [{} {}]", self.x, self.y)
    }
}

Debug implementations using either derive or the debug builder API on Formatter support pretty-printing using the alternate flag: {:#?}.

Pretty-printing with #?:

#[derive(Debug)]
struct Point {
    x: i32,
    y: i32,
}

let origin = Point { x: 0, y: 0 };

let expected = "The origin is: Point {
    x: 0,
    y: 0,
}";
assert_eq!(format!("The origin is: {origin:#?}"), expected);

Required Methods§

1.0.0 · source

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

§Errors

This function should return Err if, and only if, the provided Formatter returns Err. String formatting is considered an infallible operation; this function only returns a Result because writing to the underlying stream might fail and it must provide a way to propagate the fact that an error has occurred back up the stack.

§Examples
use std::fmt;

struct Position {
    longitude: f32,
    latitude: f32,
}

impl fmt::Debug for Position {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_tuple("")
         .field(&self.longitude)
         .field(&self.latitude)
         .finish()
    }
}

let position = Position { longitude: 1.987, latitude: 2.983 };
assert_eq!(format!("{position:?}"), "(1.987, 2.983)");

assert_eq!(format!("{position:#?}"), "(
    1.987,
    2.983,
)");

Implementors§

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impl Debug for AsciiChar

1.65.0 · source§

impl Debug for BacktraceStatus

1.0.0 · source§

impl Debug for std::cmp::Ordering

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impl Debug for TryReserveErrorKind

1.34.0 · source§

impl Debug for Infallible

1.0.0 · source§

impl Debug for VarError

1.16.0 · source§

impl Debug for c_void

1.0.0 · source§

impl Debug for ErrorKind

1.0.0 · source§

impl Debug for SeekFrom

1.7.0 · source§

impl Debug for IpAddr

source§

impl Debug for Ipv6MulticastScope

1.0.0 · source§

impl Debug for Shutdown

1.0.0 · source§

impl Debug for std::net::SocketAddr

1.0.0 · source§

impl Debug for FpCategory

1.55.0 · source§

impl Debug for IntErrorKind

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impl Debug for AncillaryError

Available on (Android or Linux) and Unix only.
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impl Debug for BacktraceStyle

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impl Debug for SearchStep

1.0.0 · source§

impl Debug for std::sync::atomic::Ordering

1.12.0 · source§

impl Debug for RecvTimeoutError

1.0.0 · source§

impl Debug for TryRecvError

1.28.0 · source§

impl Debug for std::fmt::Alignment

1.0.0 · source§

impl Debug for bool

1.0.0 · source§

impl Debug for char

1.0.0 · source§

impl Debug for f16

1.0.0 · source§

impl Debug for f32

1.0.0 · source§

impl Debug for f64

1.0.0 · source§

impl Debug for f128

1.0.0 · source§

impl Debug for i8

1.0.0 · source§

impl Debug for i16

1.0.0 · source§

impl Debug for i32

1.0.0 · source§

impl Debug for i64

1.0.0 · source§

impl Debug for i128

1.0.0 · source§

impl Debug for isize

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impl Debug for !

1.0.0 · source§

impl Debug for str

1.0.0 · source§

impl Debug for u8

1.0.0 · source§

impl Debug for u16

1.0.0 · source§

impl Debug for u32

1.0.0 · source§

impl Debug for u64

1.0.0 · source§

impl Debug for u128

1.0.0 · source§

impl Debug for ()

1.0.0 · source§

impl Debug for usize

1.27.0 · source§

impl Debug for CpuidResult

1.27.0 · source§

impl Debug for __m128

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impl Debug for __m128bh

1.27.0 · source§

impl Debug for __m128d

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impl Debug for __m128h

1.27.0 · source§

impl Debug for __m128i

1.27.0 · source§

impl Debug for __m256

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impl Debug for __m256bh

1.27.0 · source§

impl Debug for __m256d

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impl Debug for __m256h

1.27.0 · source§

impl Debug for __m256i

1.72.0 · source§

impl Debug for __m512

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impl Debug for __m512bh

1.72.0 · source§

impl Debug for __m512d

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impl Debug for __m512h

1.72.0 · source§

impl Debug for __m512i

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impl Debug for bf16

1.81.0 · source§

impl Debug for PanicMessage<'_>

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impl Debug for AllocError

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impl Debug for Global

1.28.0 · source§

impl Debug for Layout

1.50.0 · source§

impl Debug for LayoutError

1.28.0 · source§

impl Debug for System

1.0.0 · source§

impl Debug for TypeId

1.34.0 · source§

impl Debug for TryFromSliceError

1.16.0 · source§

impl Debug for std::ascii::EscapeDefault

1.65.0 · source§

impl Debug for Backtrace

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impl Debug for BacktraceFrame

1.13.0 · source§

impl Debug for BorrowError

1.13.0 · source§

impl Debug for BorrowMutError

1.34.0 · source§

impl Debug for CharTryFromError

1.9.0 · source§

impl Debug for DecodeUtf16Error

1.20.0 · source§

impl Debug for std::char::EscapeDebug

1.0.0 · source§

impl Debug for std::char::EscapeDefault

1.0.0 · source§

impl Debug for std::char::EscapeUnicode

1.20.0 · source§

impl Debug for ParseCharError

1.0.0 · source§

impl Debug for ToLowercase

1.0.0 · source§

impl Debug for ToUppercase

1.59.0 · source§

impl Debug for TryFromCharError

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impl Debug for UnorderedKeyError

1.7.0 · source§

impl Debug for DefaultHasher

1.16.0 · source§

impl Debug for RandomState

1.57.0 · source§

impl Debug for TryReserveError

1.16.0 · source§

impl Debug for Args

1.16.0 · source§

impl Debug for ArgsOs

1.0.0 · source§

impl Debug for JoinPathsError

1.16.0 · source§

impl Debug for SplitPaths<'_>

1.16.0 · source§

impl Debug for Vars

1.16.0 · source§

impl Debug for VarsOs

1.69.0 · source§

impl Debug for FromBytesUntilNulError

1.64.0 · source§

impl Debug for FromBytesWithNulError

1.64.0 · source§

impl Debug for FromVecWithNulError

1.64.0 · source§

impl Debug for IntoStringError

1.64.0 · source§

impl Debug for NulError

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impl Debug for std::ffi::os_str::Display<'_>

1.3.0 · source§

impl Debug for CStr

1.0.0 · source§

impl Debug for CString

1.0.0 · source§

impl Debug for OsStr

1.0.0 · source§

impl Debug for OsString

1.6.0 · source§

impl Debug for DirBuilder

1.13.0 · source§

impl Debug for DirEntry

1.0.0 · source§

impl Debug for File

1.75.0 · source§

impl Debug for FileTimes

1.16.0 · source§

impl Debug for FileType

1.16.0 · source§

impl Debug for Metadata

1.0.0 · source§

impl Debug for OpenOptions

1.0.0 · source§

impl Debug for Permissions

1.0.0 · source§

impl Debug for ReadDir

1.0.0 · source§

impl Debug for SipHasher

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impl Debug for BorrowedBuf<'_>

1.0.0 · source§

impl Debug for std::io::Empty

1.0.0 · source§

impl Debug for std::io::Error

1.16.0 · source§

impl Debug for std::io::Repeat

1.0.0 · source§

impl Debug for Sink

1.16.0 · source§

impl Debug for Stderr

1.16.0 · source§

impl Debug for StderrLock<'_>

1.16.0 · source§

impl Debug for Stdin

1.16.0 · source§

impl Debug for StdinLock<'_>

1.16.0 · source§

impl Debug for Stdout

1.16.0 · source§

impl Debug for StdoutLock<'_>

1.56.0 · source§

impl Debug for WriterPanicked

1.33.0 · source§

impl Debug for PhantomPinned

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impl Debug for Assume

1.0.0 · source§

impl Debug for AddrParseError

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impl Debug for IntoIncoming

1.0.0 · source§

impl Debug for Ipv4Addr

1.0.0 · source§

impl Debug for Ipv6Addr

1.0.0 · source§

impl Debug for SocketAddrV4

1.0.0 · source§

impl Debug for SocketAddrV6

1.0.0 · source§

impl Debug for TcpListener

1.0.0 · source§

impl Debug for TcpStream

1.0.0 · source§

impl Debug for UdpSocket

1.0.0 · source§

impl Debug for ParseFloatError

1.0.0 · source§

impl Debug for ParseIntError

1.34.0 · source§

impl Debug for TryFromIntError

1.0.0 · source§

impl Debug for RangeFull

1.63.0 · source§

impl Debug for BorrowedFd<'_>

1.63.0 · source§

impl Debug for OwnedFd

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impl Debug for PidFd

Available on Linux only.
1.10.0 · source§

impl Debug for std::os::unix::net::SocketAddr

Available on Unix only.
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impl Debug for UCred

Available on Unix only.
1.10.0 · source§

impl Debug for UnixDatagram

Available on Unix only.
1.10.0 · source§

impl Debug for UnixListener

Available on Unix only.
1.10.0 · source§

impl Debug for UnixStream

Available on Unix only.
1.63.0 · source§

impl Debug for BorrowedHandle<'_>

Available on Windows only.
1.63.0 · source§

impl Debug for BorrowedSocket<'_>

Available on Windows only.
1.63.0 · source§

impl Debug for HandleOrInvalid

Available on Windows only.
1.63.0 · source§

impl Debug for HandleOrNull

Available on Windows only.
1.63.0 · source§

impl Debug for InvalidHandleError

Available on Windows only.
1.63.0 · source§

impl Debug for NullHandleError

Available on Windows only.
1.63.0 · source§

impl Debug for OwnedHandle

Available on Windows only.
1.63.0 · source§

impl Debug for OwnedSocket

Available on Windows only.
1.13.0 · source§

impl Debug for Components<'_>

1.0.0 · source§

impl Debug for std::path::Display<'_>

1.13.0 · source§

impl Debug for std::path::Iter<'_>

1.0.0 · source§

impl Debug for Path

1.0.0 · source§

impl Debug for PathBuf

1.7.0 · source§

impl Debug for StripPrefixError

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impl Debug for PipeReader

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impl Debug for PipeWriter

1.16.0 · source§

impl Debug for Child

1.16.0 · source§

impl Debug for ChildStderr

1.16.0 · source§

impl Debug for ChildStdin

1.16.0 · source§

impl Debug for ChildStdout

1.0.0 · source§

impl Debug for Command

1.61.0 · source§

impl Debug for ExitCode

1.0.0 · source§

impl Debug for ExitStatus

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impl Debug for ExitStatusError

1.7.0 · source§

impl Debug for Output

1.16.0 · source§

impl Debug for Stdio

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impl Debug for std::ptr::Alignment

1.38.0 · source§

impl Debug for Chars<'_>

1.17.0 · source§

impl Debug for EncodeUtf16<'_>

1.0.0 · source§

impl Debug for ParseBoolError

1.79.0 · source§

impl Debug for Utf8Chunks<'_>

1.0.0 · source§

impl Debug for Utf8Error

1.17.0 · source§

impl Debug for std::string::Drain<'_>

1.0.0 · source§

impl Debug for FromUtf8Error

1.0.0 · source§

impl Debug for FromUtf16Error

1.0.0 · source§

impl Debug for String

1.3.0 · source§

impl Debug for AtomicBool

1.34.0 · source§

impl Debug for AtomicI8

1.34.0 · source§

impl Debug for AtomicI16

1.34.0 · source§

impl Debug for AtomicI32

1.34.0 · source§

impl Debug for AtomicI64

1.3.0 · source§

impl Debug for AtomicIsize

1.34.0 · source§

impl Debug for AtomicU8

1.34.0 · source§

impl Debug for AtomicU16

1.34.0 · source§

impl Debug for AtomicU32

1.34.0 · source§

impl Debug for AtomicU64

1.3.0 · source§

impl Debug for AtomicUsize

1.0.0 · source§

impl Debug for RecvError

1.16.0 · source§

impl Debug for Barrier

1.16.0 · source§

impl Debug for BarrierWaitResult

1.16.0 · source§

impl Debug for Condvar

1.16.0 · source§

impl Debug for std::sync::Once

1.16.0 · source§

impl Debug for OnceState

1.5.0 · source§

impl Debug for WaitTimeoutResult

1.36.0 · source§

impl Debug for Context<'_>

source§

impl Debug for LocalWaker

1.36.0 · source§

impl Debug for RawWaker

1.36.0 · source§

impl Debug for RawWakerVTable

1.36.0 · source§

impl Debug for Waker

1.26.0 · source§

impl Debug for AccessError

1.0.0 · source§

impl Debug for Builder

1.63.0 · source§

impl Debug for Scope<'_, '_>

1.0.0 · source§

impl Debug for Thread

1.19.0 · source§

impl Debug for ThreadId

1.27.0 · source§

impl Debug for Duration

1.8.0 · source§

impl Debug for Instant

1.8.0 · source§

impl Debug for SystemTime

1.8.0 · source§

impl Debug for SystemTimeError

1.66.0 · source§

impl Debug for TryFromFloatSecsError

1.0.0 · source§

impl Debug for Arguments<'_>

1.0.0 · source§

impl Debug for std::fmt::Error

1.0.0 · source§

impl Debug for dyn Any

1.0.0 · source§

impl Debug for dyn Any + Send

1.28.0 · source§

impl Debug for dyn Any + Sync + Send

1.0.0 · source§

impl<'a> Debug for Component<'a>

1.0.0 · source§

impl<'a> Debug for Prefix<'a>

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impl<'a> Debug for Source<'a>

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impl<'a> Debug for core::ffi::c_str::Bytes<'a>

1.10.0 · source§

impl<'a> Debug for PanicInfo<'a>

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impl<'a> Debug for Request<'a>

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impl<'a> Debug for BorrowedCursor<'a>

1.36.0 · source§

impl<'a> Debug for IoSlice<'a>

1.36.0 · source§

impl<'a> Debug for IoSliceMut<'a>

1.0.0 · source§

impl<'a> Debug for std::net::Incoming<'a>

1.10.0 · source§

impl<'a> Debug for std::os::unix::net::Incoming<'a>

Available on Unix only.
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impl<'a> Debug for SocketAncillary<'a>

Available on (Android or Linux) and Unix only.
1.10.0 · source§

impl<'a> Debug for Location<'a>

1.81.0 · source§

impl<'a> Debug for PanicHookInfo<'a>

1.28.0 · source§

impl<'a> Debug for Ancestors<'a>

1.0.0 · source§

impl<'a> Debug for PrefixComponent<'a>

1.57.0 · source§

impl<'a> Debug for CommandArgs<'a>

1.57.0 · source§

impl<'a> Debug for CommandEnvs<'a>

1.60.0 · source§

impl<'a> Debug for EscapeAscii<'a>

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impl<'a> Debug for CharSearcher<'a>

1.0.0 · source§

impl<'a> Debug for std::str::Bytes<'a>

1.0.0 · source§

impl<'a> Debug for CharIndices<'a>

1.34.0 · source§

impl<'a> Debug for std::str::EscapeDebug<'a>

1.34.0 · source§

impl<'a> Debug for std::str::EscapeDefault<'a>

1.34.0 · source§

impl<'a> Debug for std::str::EscapeUnicode<'a>

1.0.0 · source§

impl<'a> Debug for std::str::Lines<'a>

1.0.0 · source§

impl<'a> Debug for LinesAny<'a>

1.34.0 · source§

impl<'a> Debug for SplitAsciiWhitespace<'a>

1.1.0 · source§

impl<'a> Debug for SplitWhitespace<'a>

1.79.0 · source§

impl<'a> Debug for Utf8Chunk<'a>

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impl<'a> Debug for ContextBuilder<'a>

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impl<'a, 'b> Debug for CharSliceSearcher<'a, 'b>

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impl<'a, 'b> Debug for StrSearcher<'a, 'b>

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impl<'a, 'b, const N: usize> Debug for CharArrayRefSearcher<'a, 'b, N>

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impl<'a, 'f> Debug for VaList<'a, 'f>
where 'f: 'a,

1.0.0 · source§

impl<'a, A> Debug for std::option::Iter<'a, A>
where A: Debug + 'a,

1.0.0 · source§

impl<'a, A> Debug for std::option::IterMut<'a, A>
where A: Debug + 'a,

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impl<'a, I> Debug for ByRefSized<'a, I>
where I: Debug,

1.21.0 · source§

impl<'a, I, A> Debug for Splice<'a, I, A>
where I: Debug + Iterator + 'a, A: Debug + Allocator + 'a, <I as Iterator>::Item: Debug,

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impl<'a, K, F> Debug for std::collections::hash_set::ExtractIf<'a, K, F>
where F: FnMut(&K) -> bool,

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impl<'a, K, V, F> Debug for std::collections::hash_map::ExtractIf<'a, K, V, F>
where F: FnMut(&K, &mut V) -> bool,

1.5.0 · source§

impl<'a, P> Debug for MatchIndices<'a, P>
where P: Pattern, <P as Pattern>::Searcher<'a>: Debug,

1.2.0 · source§

impl<'a, P> Debug for Matches<'a, P>
where P: Pattern, <P as Pattern>::Searcher<'a>: Debug,

1.5.0 · source§

impl<'a, P> Debug for RMatchIndices<'a, P>
where P: Pattern, <P as Pattern>::Searcher<'a>: Debug,

1.2.0 · source§

impl<'a, P> Debug for RMatches<'a, P>
where P: Pattern, <P as Pattern>::Searcher<'a>: Debug,

1.0.0 · source§

impl<'a, P> Debug for std::str::RSplit<'a, P>
where P: Pattern, <P as Pattern>::Searcher<'a>: Debug,

1.0.0 · source§

impl<'a, P> Debug for std::str::RSplitN<'a, P>
where P: Pattern, <P as Pattern>::Searcher<'a>: Debug,

1.0.0 · source§

impl<'a, P> Debug for RSplitTerminator<'a, P>
where P: Pattern, <P as Pattern>::Searcher<'a>: Debug,

1.0.0 · source§

impl<'a, P> Debug for std::str::Split<'a, P>
where P: Pattern, <P as Pattern>::Searcher<'a>: Debug,

1.51.0 · source§

impl<'a, P> Debug for std::str::SplitInclusive<'a, P>
where P: Pattern, <P as Pattern>::Searcher<'a>: Debug,

1.0.0 · source§

impl<'a, P> Debug for std::str::SplitN<'a, P>
where P: Pattern, <P as Pattern>::Searcher<'a>: Debug,

1.0.0 · source§

impl<'a, P> Debug for SplitTerminator<'a, P>
where P: Pattern, <P as Pattern>::Searcher<'a>: Debug,

1.17.0 · source§

impl<'a, T> Debug for std::collections::btree_set::Range<'a, T>
where T: Debug + 'a,

1.0.0 · source§

impl<'a, T> Debug for std::result::Iter<'a, T>
where T: Debug + 'a,

1.0.0 · source§

impl<'a, T> Debug for std::result::IterMut<'a, T>
where T: Debug + 'a,

1.0.0 · source§

impl<'a, T> Debug for Chunks<'a, T>
where T: Debug + 'a,

1.31.0 · source§

impl<'a, T> Debug for ChunksExact<'a, T>
where T: Debug + 'a,

1.31.0 · source§

impl<'a, T> Debug for ChunksExactMut<'a, T>
where T: Debug + 'a,

1.0.0 · source§

impl<'a, T> Debug for ChunksMut<'a, T>
where T: Debug + 'a,

1.31.0 · source§

impl<'a, T> Debug for RChunks<'a, T>
where T: Debug + 'a,

1.31.0 · source§

impl<'a, T> Debug for RChunksExact<'a, T>
where T: Debug + 'a,

1.31.0 · source§

impl<'a, T> Debug for RChunksExactMut<'a, T>
where T: Debug + 'a,

1.31.0 · source§

impl<'a, T> Debug for RChunksMut<'a, T>
where T: Debug + 'a,

1.0.0 · source§

impl<'a, T> Debug for Windows<'a, T>
where T: Debug + 'a,

1.6.0 · source§

impl<'a, T, A> Debug for std::collections::binary_heap::Drain<'a, T, A>
where T: Debug + 'a, A: Debug + Allocator,

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impl<'a, T, A> Debug for DrainSorted<'a, T, A>
where T: Debug + Ord, A: Debug + Allocator,

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impl<'a, T, F, A> Debug for std::vec::ExtractIf<'a, T, F, A>
where T: Debug, F: Debug + FnMut(&mut T) -> bool, A: Debug + Allocator,

1.77.0 · source§

impl<'a, T, P> Debug for ChunkBy<'a, T, P>
where T: 'a + Debug,

1.77.0 · source§

impl<'a, T, P> Debug for ChunkByMut<'a, T, P>
where T: 'a + Debug,

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impl<'a, T, const N: usize> Debug for std::slice::ArrayChunks<'a, T, N>
where T: Debug + 'a,

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impl<'a, T, const N: usize> Debug for ArrayChunksMut<'a, T, N>
where T: Debug + 'a,

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impl<'a, T, const N: usize> Debug for ArrayWindows<'a, T, N>
where T: Debug + 'a,

1.0.0 · source§

impl<'a, T: Debug + 'a> Debug for std::sync::mpsc::Iter<'a, T>

1.15.0 · source§

impl<'a, T: Debug + 'a> Debug for TryIter<'a, T>

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impl<'a, const N: usize> Debug for CharArraySearcher<'a, N>

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impl<'f> Debug for VaListImpl<'f>

1.63.0 · source§

impl<'scope, T> Debug for ScopedJoinHandle<'scope, T>

source§

impl<A> Debug for IterRange<A>
where A: Debug,

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impl<A> Debug for IterRangeFrom<A>
where A: Debug,

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impl<A> Debug for IterRangeInclusive<A>
where A: Debug,

1.0.0 · source§

impl<A> Debug for std::iter::Repeat<A>
where A: Debug,

1.82.0 · source§

impl<A> Debug for RepeatN<A>
where A: Debug,

1.0.0 · source§

impl<A> Debug for std::option::IntoIter<A>
where A: Debug,

1.0.0 · source§

impl<A, B> Debug for std::iter::Chain<A, B>
where A: Debug, B: Debug,

1.0.0 · source§

impl<A, B> Debug for Zip<A, B>
where A: Debug, B: Debug,

1.0.0 · source§

impl<B> Debug for Cow<'_, B>
where B: Debug + ToOwned + ?Sized, <B as ToOwned>::Owned: Debug,

1.55.0 · source§

impl<B, C> Debug for ControlFlow<B, C>
where B: Debug, C: Debug,

1.0.0 · source§

impl<B: Debug> Debug for std::io::Lines<B>

1.0.0 · source§

impl<B: Debug> Debug for std::io::Split<B>

source§

impl<Dyn> Debug for DynMetadata<Dyn>
where Dyn: ?Sized,

source§

impl<E> Debug for Report<E>
where Report<E>: Display,

1.64.0 · source§

impl<F> Debug for PollFn<F>

1.34.0 · source§

impl<F> Debug for std::iter::FromFn<F>

1.68.0 · source§

impl<F> Debug for OnceWith<F>

1.68.0 · source§

impl<F> Debug for RepeatWith<F>

source§

impl<F> Debug for CharPredicateSearcher<'_, F>
where F: FnMut(char) -> bool,

source§

impl<F> Debug for std::fmt::FromFn<F>
where F: Fn(&mut Formatter<'_>) -> Result<(), Error>,

1.4.0 · source§

impl<F> Debug for F
where F: FnPtr,

1.9.0 · source§

impl<H> Debug for BuildHasherDefault<H>

source§

impl<I> Debug for FromIter<I>
where I: Debug,

1.9.0 · source§

impl<I> Debug for DecodeUtf16<I>
where I: Debug + Iterator<Item = u16>,

1.1.0 · source§

impl<I> Debug for Cloned<I>
where I: Debug,

1.36.0 · source§

impl<I> Debug for Copied<I>
where I: Debug,

1.0.0 · source§

impl<I> Debug for Cycle<I>
where I: Debug,

1.0.0 · source§

impl<I> Debug for Enumerate<I>
where I: Debug,

1.0.0 · source§

impl<I> Debug for Fuse<I>
where I: Debug,

source§

impl<I> Debug for Intersperse<I>
where I: Debug + Iterator, <I as Iterator>::Item: Clone + Debug,

1.0.0 · source§

impl<I> Debug for Peekable<I>
where I: Debug + Iterator, <I as Iterator>::Item: Debug,

1.0.0 · source§

impl<I> Debug for Skip<I>
where I: Debug,

1.28.0 · source§

impl<I> Debug for StepBy<I>
where I: Debug,

1.0.0 · source§

impl<I> Debug for std::iter::Take<I>
where I: Debug,

1.9.0 · source§

impl<I, F> Debug for FilterMap<I, F>
where I: Debug,

1.9.0 · source§

impl<I, F> Debug for Inspect<I, F>
where I: Debug,

1.9.0 · source§

impl<I, F> Debug for Map<I, F>
where I: Debug,

source§

impl<I, F, const N: usize> Debug for MapWindows<I, F, N>
where I: Iterator + Debug,

source§

impl<I, G> Debug for IntersperseWith<I, G>
where I: Iterator + Debug, <I as Iterator>::Item: Debug, G: Debug,

1.9.0 · source§

impl<I, P> Debug for Filter<I, P>
where I: Debug,

1.57.0 · source§

impl<I, P> Debug for MapWhile<I, P>
where I: Debug,

1.9.0 · source§

impl<I, P> Debug for SkipWhile<I, P>
where I: Debug,

1.9.0 · source§

impl<I, P> Debug for TakeWhile<I, P>
where I: Debug,

1.9.0 · source§

impl<I, St, F> Debug for Scan<I, St, F>
where I: Debug, St: Debug,

1.29.0 · source§

impl<I, U> Debug for Flatten<I>
where I: Debug + Iterator, <I as Iterator>::Item: IntoIterator<IntoIter = U, Item = <U as Iterator>::Item>, U: Debug + Iterator,

1.9.0 · source§

impl<I, U, F> Debug for FlatMap<I, U, F>
where I: Debug, U: IntoIterator, <U as IntoIterator>::IntoIter: Debug,

source§

impl<I, const N: usize> Debug for std::iter::ArrayChunks<I, N>
where I: Debug + Iterator, <I as Iterator>::Item: Debug,

source§

impl<Idx> Debug for core::range::Range<Idx>
where Idx: Debug,

source§

impl<Idx> Debug for core::range::RangeFrom<Idx>
where Idx: Debug,

source§

impl<Idx> Debug for core::range::RangeInclusive<Idx>
where Idx: Debug,

1.0.0 · source§

impl<Idx> Debug for std::ops::Range<Idx>
where Idx: Debug,

1.0.0 · source§

impl<Idx> Debug for std::ops::RangeFrom<Idx>
where Idx: Debug,

1.26.0 · source§

impl<Idx> Debug for std::ops::RangeInclusive<Idx>
where Idx: Debug,

1.0.0 · source§

impl<Idx> Debug for RangeTo<Idx>
where Idx: Debug,

1.26.0 · source§

impl<Idx> Debug for RangeToInclusive<Idx>
where Idx: Debug,

source§

impl<K> Debug for std::collections::btree_set::Cursor<'_, K>
where K: Debug,

source§

impl<K, A> Debug for std::collections::btree_set::CursorMut<'_, K, A>
where K: Debug,

source§

impl<K, A> Debug for std::collections::btree_set::CursorMutKey<'_, K, A>
where K: Debug,

source§

impl<K, V> Debug for std::collections::btree_map::Cursor<'_, K, V>
where K: Debug, V: Debug,

1.17.0 · source§

impl<K, V> Debug for std::collections::btree_map::Iter<'_, K, V>
where K: Debug, V: Debug,

1.17.0 · source§

impl<K, V> Debug for std::collections::btree_map::IterMut<'_, K, V>
where K: Debug, V: Debug,

1.17.0 · source§

impl<K, V> Debug for std::collections::btree_map::Keys<'_, K, V>
where K: Debug,

1.17.0 · source§

impl<K, V> Debug for std::collections::btree_map::Range<'_, K, V>
where K: Debug, V: Debug,

1.17.0 · source§

impl<K, V> Debug for RangeMut<'_, K, V>
where K: Debug, V: Debug,

1.17.0 · source§

impl<K, V> Debug for std::collections::btree_map::Values<'_, K, V>
where V: Debug,

1.10.0 · source§

impl<K, V> Debug for std::collections::btree_map::ValuesMut<'_, K, V>
where V: Debug,

1.16.0 · source§

impl<K, V> Debug for std::collections::hash_map::Drain<'_, K, V>
where K: Debug, V: Debug,

1.16.0 · source§

impl<K, V> Debug for std::collections::hash_map::IterMut<'_, K, V>
where K: Debug, V: Debug,

1.12.0 · source§

impl<K, V, A> Debug for std::collections::btree_map::Entry<'_, K, V, A>
where K: Debug + Ord, V: Debug, A: Allocator + Clone,

source§

impl<K, V, A> Debug for std::collections::btree_map::CursorMut<'_, K, V, A>
where K: Debug, V: Debug,

source§

impl<K, V, A> Debug for std::collections::btree_map::CursorMutKey<'_, K, V, A>
where K: Debug, V: Debug,

1.17.0 · source§

impl<K, V, A> Debug for std::collections::btree_map::IntoIter<K, V, A>
where K: Debug, V: Debug, A: Allocator + Clone,

1.54.0 · source§

impl<K, V, A> Debug for std::collections::btree_map::IntoKeys<K, V, A>
where K: Debug, A: Allocator + Clone,

1.54.0 · source§

impl<K, V, A> Debug for std::collections::btree_map::IntoValues<K, V, A>
where V: Debug, A: Allocator + Clone,

1.12.0 · source§

impl<K, V, A> Debug for std::collections::btree_map::OccupiedEntry<'_, K, V, A>
where K: Debug + Ord, V: Debug, A: Allocator + Clone,

source§

impl<K, V, A> Debug for std::collections::btree_map::OccupiedError<'_, K, V, A>
where K: Debug + Ord, V: Debug, A: Allocator + Clone,

1.12.0 · source§

impl<K, V, A> Debug for std::collections::btree_map::VacantEntry<'_, K, V, A>
where K: Debug + Ord, A: Allocator + Clone,

1.0.0 · source§

impl<K, V, A> Debug for BTreeMap<K, V, A>
where K: Debug, V: Debug, A: Allocator + Clone,

source§

impl<K, V, F> Debug for std::collections::btree_map::ExtractIf<'_, K, V, F>
where K: Debug, V: Debug, F: FnMut(&K, &mut V) -> bool,

1.0.0 · source§

impl<K, V, S> Debug for HashMap<K, V, S>
where K: Debug, V: Debug,

source§

impl<K, V, S> Debug for RawEntryBuilder<'_, K, V, S>

source§

impl<K, V, S> Debug for RawEntryBuilderMut<'_, K, V, S>

source§

impl<K, V, S> Debug for RawVacantEntryMut<'_, K, V, S>

1.54.0 · source§

impl<K, V: Debug> Debug for std::collections::hash_map::IntoValues<K, V>

1.16.0 · source§

impl<K, V: Debug> Debug for std::collections::hash_map::Values<'_, K, V>

1.16.0 · source§

impl<K, V: Debug> Debug for std::collections::hash_map::ValuesMut<'_, K, V>

1.16.0 · source§

impl<K: Debug> Debug for std::collections::hash_set::Drain<'_, K>

1.16.0 · source§

impl<K: Debug> Debug for std::collections::hash_set::IntoIter<K>

1.16.0 · source§

impl<K: Debug> Debug for std::collections::hash_set::Iter<'_, K>

1.54.0 · source§

impl<K: Debug, V> Debug for std::collections::hash_map::IntoKeys<K, V>

1.16.0 · source§

impl<K: Debug, V> Debug for std::collections::hash_map::Keys<'_, K, V>

1.12.0 · source§

impl<K: Debug, V> Debug for std::collections::hash_map::VacantEntry<'_, K, V>

1.12.0 · source§

impl<K: Debug, V: Debug> Debug for std::collections::hash_map::Entry<'_, K, V>

1.16.0 · source§

impl<K: Debug, V: Debug> Debug for std::collections::hash_map::IntoIter<K, V>

1.16.0 · source§

impl<K: Debug, V: Debug> Debug for std::collections::hash_map::Iter<'_, K, V>

1.12.0 · source§

impl<K: Debug, V: Debug> Debug for std::collections::hash_map::OccupiedEntry<'_, K, V>

source§

impl<K: Debug, V: Debug> Debug for std::collections::hash_map::OccupiedError<'_, K, V>

source§

impl<K: Debug, V: Debug, S> Debug for RawEntryMut<'_, K, V, S>

source§

impl<K: Debug, V: Debug, S> Debug for RawOccupiedEntryMut<'_, K, V, S>

1.33.0 · source§

impl<Ptr> Debug for Pin<Ptr>
where Ptr: Debug,

1.0.0 · source§

impl<R> Debug for BufReader<R>
where R: ?Sized + Debug,

1.0.0 · source§

impl<R: Debug> Debug for std::io::Bytes<R>

1.17.0 · source§

impl<T> Debug for Bound<T>
where T: Debug,

1.0.0 · source§

impl<T> Debug for Option<T>
where T: Debug,

1.0.0 · source§

impl<T> Debug for TryLockError<T>

1.0.0 · source§

impl<T> Debug for TrySendError<T>

1.36.0 · source§

impl<T> Debug for Poll<T>
where T: Debug,

1.0.0 · source§

impl<T> Debug for *const T
where T: ?Sized,

1.0.0 · source§

impl<T> Debug for *mut T
where T: ?Sized,

1.0.0 · source§

impl<T> Debug for &T
where T: Debug + ?Sized,

1.0.0 · source§

impl<T> Debug for &mut T
where T: Debug + ?Sized,

1.0.0 · source§

impl<T> Debug for [T]
where T: Debug,

1.0.0 · source§

impl<T> Debug for (T₁, T₂, …, Tₙ)
where T: Debug + ?Sized,

This trait is implemented for tuples up to twelve items long.

source§

impl<T> Debug for ThinBox<T>
where T: Debug + ?Sized,

1.0.0 · source§

impl<T> Debug for Cell<T>
where T: Copy + Debug,

1.70.0 · source§

impl<T> Debug for OnceCell<T>
where T: Debug,

1.0.0 · source§

impl<T> Debug for Ref<'_, T>
where T: Debug + ?Sized,

1.0.0 · source§

impl<T> Debug for RefCell<T>
where T: Debug + ?Sized,

1.0.0 · source§

impl<T> Debug for RefMut<'_, T>
where T: Debug + ?Sized,

source§

impl<T> Debug for SyncUnsafeCell<T>
where T: ?Sized,

1.9.0 · source§

impl<T> Debug for UnsafeCell<T>
where T: ?Sized,

1.19.0 · source§

impl<T> Debug for Reverse<T>
where T: Debug,

1.17.0 · source§

impl<T> Debug for std::collections::binary_heap::Iter<'_, T>
where T: Debug,

1.17.0 · source§

impl<T> Debug for std::collections::btree_set::Iter<'_, T>
where T: Debug,

1.17.0 · source§

impl<T> Debug for std::collections::btree_set::SymmetricDifference<'_, T>
where T: Debug,

1.17.0 · source§

impl<T> Debug for std::collections::btree_set::Union<'_, T>
where T: Debug,

1.17.0 · source§

impl<T> Debug for std::collections::linked_list::Iter<'_, T>
where T: Debug,

1.17.0 · source§

impl<T> Debug for std::collections::linked_list::IterMut<'_, T>
where T: Debug,

1.17.0 · source§

impl<T> Debug for std::collections::vec_deque::Iter<'_, T>
where T: Debug,

1.17.0 · source§

impl<T> Debug for std::collections::vec_deque::IterMut<'_, T>
where T: Debug,

source§

impl<T> Debug for AsyncDropInPlace<T>
where T: ?Sized,

1.48.0 · source§

impl<T> Debug for Pending<T>

1.48.0 · source§

impl<T> Debug for Ready<T>
where T: Debug,

1.9.0 · source§

impl<T> Debug for std::iter::Empty<T>

1.2.0 · source§

impl<T> Debug for std::iter::Once<T>
where T: Debug,

1.0.0 · source§

impl<T> Debug for Rev<T>
where T: Debug,

1.0.0 · source§

impl<T> Debug for PhantomData<T>
where T: ?Sized,

1.21.0 · source§

impl<T> Debug for Discriminant<T>

1.20.0 · source§

impl<T> Debug for ManuallyDrop<T>
where T: Debug + ?Sized,

1.28.0 · source§

impl<T> Debug for NonZero<T>

1.74.0 · source§

impl<T> Debug for Saturating<T>
where T: Debug,

1.0.0 · source§

impl<T> Debug for Wrapping<T>
where T: Debug,

source§

impl<T> Debug for Yeet<T>
where T: Debug,

1.16.0 · source§

impl<T> Debug for AssertUnwindSafe<T>
where T: Debug,

1.25.0 · source§

impl<T> Debug for NonNull<T>
where T: ?Sized,

1.0.0 · source§

impl<T> Debug for std::result::IntoIter<T>
where T: Debug,

1.9.0 · source§

impl<T> Debug for std::slice::Iter<'_, T>
where T: Debug,

1.9.0 · source§

impl<T> Debug for std::slice::IterMut<'_, T>
where T: Debug,

1.3.0 · source§

impl<T> Debug for AtomicPtr<T>

1.8.0 · source§

impl<T> Debug for Receiver<T>

1.0.0 · source§

impl<T> Debug for SendError<T>

1.8.0 · source§

impl<T> Debug for Sender<T>

1.8.0 · source§

impl<T> Debug for SyncSender<T>

source§

impl<T> Debug for Exclusive<T>
where T: ?Sized,

1.0.0 · source§

impl<T> Debug for PoisonError<T>

1.16.0 · source§

impl<T> Debug for JoinHandle<T>

1.41.0 · source§

impl<T> Debug for MaybeUninit<T>

1.0.0 · source§

impl<T, A> Debug for Box<T, A>
where T: Debug + ?Sized, A: Allocator,

1.17.0 · source§

impl<T, A> Debug for std::collections::binary_heap::IntoIter<T, A>
where T: Debug, A: Allocator,

source§

impl<T, A> Debug for IntoIterSorted<T, A>
where T: Debug, A: Debug + Allocator,

1.17.0 · source§

impl<T, A> Debug for PeekMut<'_, T, A>
where T: Ord + Debug, A: Allocator,

1.17.0 · source§

impl<T, A> Debug for std::collections::btree_set::Difference<'_, T, A>
where T: Debug, A: Allocator + Clone,

1.17.0 · source§

impl<T, A> Debug for std::collections::btree_set::Intersection<'_, T, A>
where T: Debug, A: Allocator + Clone,

1.0.0 · source§

impl<T, A> Debug for std::collections::btree_set::IntoIter<T, A>
where T: Debug, A: Debug + Allocator + Clone,

source§

impl<T, A> Debug for std::collections::linked_list::Cursor<'_, T, A>
where T: Debug, A: Allocator,

source§

impl<T, A> Debug for std::collections::linked_list::CursorMut<'_, T, A>
where T: Debug, A: Allocator,

1.17.0 · source§

impl<T, A> Debug for std::collections::linked_list::IntoIter<T, A>
where T: Debug, A: Allocator,

1.0.0 · source§

impl<T, A> Debug for BTreeSet<T, A>
where T: Debug, A: Allocator + Clone,

1.4.0 · source§

impl<T, A> Debug for BinaryHeap<T, A>
where T: Debug, A: Allocator,

1.0.0 · source§

impl<T, A> Debug for LinkedList<T, A>
where T: Debug, A: Allocator,

1.0.0 · source§

impl<T, A> Debug for VecDeque<T, A>
where T: Debug, A: Allocator,

1.17.0 · source§

impl<T, A> Debug for std::collections::vec_deque::Drain<'_, T, A>
where T: Debug, A: Allocator,

1.17.0 · source§

impl<T, A> Debug for std::collections::vec_deque::IntoIter<T, A>
where T: Debug, A: Allocator,

1.0.0 · source§

impl<T, A> Debug for Rc<T, A>
where T: Debug + ?Sized, A: Allocator,

source§

impl<T, A> Debug for UniqueRc<T, A>
where T: Debug + ?Sized, A: Debug + Allocator,

1.4.0 · source§

impl<T, A> Debug for std::rc::Weak<T, A>
where A: Allocator, T: ?Sized,

1.0.0 · source§

impl<T, A> Debug for Arc<T, A>
where T: Debug + ?Sized, A: Allocator,

1.4.0 · source§

impl<T, A> Debug for std::sync::Weak<T, A>
where A: Allocator, T: ?Sized,

1.17.0 · source§

impl<T, A> Debug for std::vec::Drain<'_, T, A>
where T: Debug, A: Allocator,

1.13.0 · source§

impl<T, A> Debug for std::vec::IntoIter<T, A>
where T: Debug, A: Allocator,

1.0.0 · source§

impl<T, A> Debug for Vec<T, A>
where T: Debug, A: Allocator,

1.0.0 · source§

impl<T, E> Debug for Result<T, E>
where T: Debug, E: Debug,

1.80.0 · source§

impl<T, F> Debug for LazyCell<T, F>
where T: Debug,

source§

impl<T, F> Debug for std::collections::linked_list::ExtractIf<'_, T, F>
where T: Debug, F: FnMut(&mut T) -> bool,

1.34.0 · source§

impl<T, F> Debug for Successors<T, F>
where T: Debug,

source§

impl<T, F, A> Debug for std::collections::btree_set::ExtractIf<'_, T, F, A>
where A: Allocator + Clone, T: Debug, F: FnMut(&T) -> bool,

1.27.0 · source§

impl<T, P> Debug for std::slice::RSplit<'_, T, P>
where T: Debug, P: FnMut(&T) -> bool,

1.27.0 · source§

impl<T, P> Debug for RSplitMut<'_, T, P>
where T: Debug, P: FnMut(&T) -> bool,

1.9.0 · source§

impl<T, P> Debug for std::slice::RSplitN<'_, T, P>
where T: Debug, P: FnMut(&T) -> bool,

1.9.0 · source§

impl<T, P> Debug for RSplitNMut<'_, T, P>
where T: Debug, P: FnMut(&T) -> bool,

1.9.0 · source§

impl<T, P> Debug for std::slice::Split<'_, T, P>
where T: Debug, P: FnMut(&T) -> bool,

1.51.0 · source§

impl<T, P> Debug for std::slice::SplitInclusive<'_, T, P>
where T: Debug, P: FnMut(&T) -> bool,

1.51.0 · source§

impl<T, P> Debug for SplitInclusiveMut<'_, T, P>
where T: Debug, P: FnMut(&T) -> bool,

1.9.0 · source§

impl<T, P> Debug for SplitMut<'_, T, P>
where T: Debug, P: FnMut(&T) -> bool,

1.9.0 · source§

impl<T, P> Debug for std::slice::SplitN<'_, T, P>
where T: Debug, P: FnMut(&T) -> bool,

1.9.0 · source§

impl<T, P> Debug for SplitNMut<'_, T, P>
where T: Debug, P: FnMut(&T) -> bool,

1.16.0 · source§

impl<T, S> Debug for std::collections::hash_set::Difference<'_, T, S>
where T: Debug + Eq + Hash, S: BuildHasher,

1.0.0 · source§

impl<T, S> Debug for HashSet<T, S>
where T: Debug,

1.16.0 · source§

impl<T, S> Debug for std::collections::hash_set::Intersection<'_, T, S>
where T: Debug + Eq + Hash, S: BuildHasher,

1.16.0 · source§

impl<T, S> Debug for std::collections::hash_set::SymmetricDifference<'_, T, S>
where T: Debug + Eq + Hash, S: BuildHasher,

1.16.0 · source§

impl<T, S> Debug for std::collections::hash_set::Union<'_, T, S>
where T: Debug + Eq + Hash, S: BuildHasher,

1.0.0 · source§

impl<T, const N: usize> Debug for [T; N]
where T: Debug,

1.40.0 · source§

impl<T, const N: usize> Debug for std::array::IntoIter<T, N>
where T: Debug,

source§

impl<T, const N: usize> Debug for Mask<T, N>

source§

impl<T, const N: usize> Debug for Simd<T, N>

1.16.0 · source§

impl<T: 'static> Debug for LocalKey<T>

source§

impl<T: Debug + ?Sized> Debug for ReentrantLock<T>

source§

impl<T: Debug + ?Sized> Debug for ReentrantLockGuard<'_, T>

1.0.0 · source§

impl<T: Debug> Debug for std::io::Cursor<T>

1.0.0 · source§

impl<T: Debug> Debug for std::io::Take<T>

1.1.0 · source§

impl<T: Debug> Debug for std::sync::mpsc::IntoIter<T>

1.70.0 · source§

impl<T: Debug> Debug for OnceLock<T>

1.80.0 · source§

impl<T: Debug, F> Debug for LazyLock<T, F>

1.0.0 · source§

impl<T: Debug, U: Debug> Debug for std::io::Chain<T, U>

source§

impl<T: ?Sized + Debug> Debug for MappedMutexGuard<'_, T>

source§

impl<T: ?Sized + Debug> Debug for MappedRwLockReadGuard<'_, T>

source§

impl<T: ?Sized + Debug> Debug for MappedRwLockWriteGuard<'_, T>

1.0.0 · source§

impl<T: ?Sized + Debug> Debug for Mutex<T>

1.16.0 · source§

impl<T: ?Sized + Debug> Debug for MutexGuard<'_, T>

1.0.0 · source§

impl<T: ?Sized + Debug> Debug for RwLock<T>

1.16.0 · source§

impl<T: ?Sized + Debug> Debug for RwLockReadGuard<'_, T>

1.16.0 · source§

impl<T: ?Sized + Debug> Debug for RwLockWriteGuard<'_, T>

1.0.0 · source§

impl<W> Debug for BufWriter<W>
where W: Debug + ?Sized + Write,

1.0.0 · source§

impl<W> Debug for LineWriter<W>
where W: Debug + ?Sized + Write,

1.0.0 · source§

impl<W: Debug> Debug for IntoInnerError<W>

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impl<Y, R> Debug for CoroutineState<Y, R>
where Y: Debug, R: Debug,

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impl<const N: usize> Debug for GetManyMutError<N>