pub enum FieldlessVariantsStrategy {
Unify,
Default,
SpecializeIfAllVariantsFieldless,
}
Expand description
How to handle fieldless enum variants.
Variants§
Unify
Combine fieldless variants into a single match arm. This assumes that relevant information has been handled by looking at the enum’s discriminant.
Default
Don’t do anything special about fieldless variants. They are handled like any other variant.
SpecializeIfAllVariantsFieldless
If all variants of the enum are fieldless, expand the special
AllFieldLessEnum
substructure, so that the entire enum can be handled
at once.
Trait Implementations§
source§impl PartialEq<FieldlessVariantsStrategy> for FieldlessVariantsStrategy
impl PartialEq<FieldlessVariantsStrategy> for FieldlessVariantsStrategy
source§fn eq(&self, other: &FieldlessVariantsStrategy) -> bool
fn eq(&self, other: &FieldlessVariantsStrategy) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.impl StructuralPartialEq for FieldlessVariantsStrategy
Auto Trait Implementations§
impl RefUnwindSafe for FieldlessVariantsStrategy
impl Send for FieldlessVariantsStrategy
impl Sync for FieldlessVariantsStrategy
impl Unpin for FieldlessVariantsStrategy
impl UnwindSafe for FieldlessVariantsStrategy
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 1 byte
Size for each variant:
Unify
: 0 bytesDefault
: 0 bytesSpecializeIfAllVariantsFieldless
: 0 bytes