pub struct Discriminant<T>(/* private fields */);Expand description
Opaque type representing the discriminant of an enum.
See the discriminant function in this module for more information.
Trait Implementations§
1.21.0 · Source§impl<T> Clone for Discriminant<T>
impl<T> Clone for Discriminant<T>
Source§fn clone(&self) -> Discriminant<T>
fn clone(&self) -> Discriminant<T>
Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moreimpl<T> Copy for Discriminant<T>
1.21.0 · Source§impl<T> Debug for Discriminant<T>
impl<T> Debug for Discriminant<T>
1.21.0 · Source§impl<T> Eq for Discriminant<T>
impl<T> Eq for Discriminant<T>
1.0.0 (const: unstable) · Source§#[doc(hidden)]fn assert_receiver_is_total_eq(&self)
#[doc(hidden)]fn assert_receiver_is_total_eq(&self)
👎Deprecated since 1.95.0:
implementation detail of #[derive(Eq)]
Source§#[doc(hidden)]fn assert_fields_are_eq(&self)
#[doc(hidden)]fn assert_fields_are_eq(&self)
🔬This is a nightly-only experimental API. (
derive_eq_internals)1.21.0 · Source§impl<T> Hash for Discriminant<T>
impl<T> Hash for Discriminant<T>
1.21.0 · Source§impl<T> PartialEq for Discriminant<T>
impl<T> PartialEq for Discriminant<T>
Source§fn eq(&self, rhs: &Discriminant<T>) -> bool
fn eq(&self, rhs: &Discriminant<T>) -> bool
Tests for
self and other values to be equal, and is used by ==.impl<T> TrivialClone for Discriminant<T>
Auto Trait Implementations§
impl<T> Freeze for Discriminant<T>
impl<T> RefUnwindSafe for Discriminant<T>
impl<T> Send for Discriminant<T>
impl<T> Sync for Discriminant<T>
impl<T> Unpin for Discriminant<T>
impl<T> UnsafeUnpin for Discriminant<T>
impl<T> UnwindSafe for Discriminant<T>
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
impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> InvariantsEq<ManuallyDrop<T>> for Twhere
T: ?Sized,
impl<T> InvariantsEq<T> for Twhere
T: ?Sized,
impl<T> InvariantsEq<Wrapping<T>> for T
impl<Src, Dst, A, SV, DV, R> MutationCompatible<Src, A, SV, DV, (BecauseRead, R)> for Dst
impl<Src, Dst, A, SV, DV> MutationCompatible<Src, A, SV, DV, BecauseInvariantsEq> for Dstwhere
A: Aliasing,
SV: Validity,
DV: Validity,
Src: TransmuteFrom<Dst, DV, SV> + ?Sized,
Dst: TransmuteFrom<Src, SV, DV> + InvariantsEq<Src> + ?Sized,
impl<T> Printable for T
impl<T> Read<Exclusive, BecauseExclusive> for Twhere
T: ?Sized,
Source§impl<T> SizeEq<MaybeUninit<T>> for T
impl<T> SizeEq<MaybeUninit<T>> for T
type CastFrom = CastSizedExact
Source§impl<T> SizedTypeProperties for T
impl<T> SizedTypeProperties for T
Source§#[doc(hidden)]const SIZE: usize = _
#[doc(hidden)]const SIZE: usize = _
🔬This is a nightly-only experimental API. (
sized_type_properties)Source§#[doc(hidden)]const ALIGN: usize = _
#[doc(hidden)]const ALIGN: usize = _
🔬This is a nightly-only experimental API. (
sized_type_properties)Source§#[doc(hidden)]const ALIGNMENT: Alignment = _
#[doc(hidden)]const ALIGNMENT: Alignment = _
🔬This is a nightly-only experimental API. (
ptr_alignment_type)Source§#[doc(hidden)]const IS_ZST: bool = _
#[doc(hidden)]const IS_ZST: bool = _
🔬This is a nightly-only experimental API. (
sized_type_properties)Source§#[doc(hidden)]const LAYOUT: Layout = _
#[doc(hidden)]const LAYOUT: Layout = _
🔬This is a nightly-only experimental API. (
sized_type_properties)Source§#[doc(hidden)]const MAX_SLICE_LEN: usize = _
#[doc(hidden)]const MAX_SLICE_LEN: usize = _
🔬This is a nightly-only experimental API. (
sized_type_properties)The largest safe length for a
[Self]. Read more