Enum rustc_attr::builtin::StableSince
source · pub enum StableSince {
Version(RustcVersion),
Current,
Err,
}
Expand description
Rust release in which a feature is stabilized.
Variants§
Version(RustcVersion)
Current
Stabilized in the upcoming version, whatever number that is.
Err
Failed to parse a stabilization version.
Trait Implementations§
source§impl Clone for StableSince
impl Clone for StableSince
source§fn clone(&self) -> StableSince
fn clone(&self) -> StableSince
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for StableSince
impl Debug for StableSince
source§impl<__D: SpanDecoder> Decodable<__D> for StableSince
impl<__D: SpanDecoder> Decodable<__D> for StableSince
source§impl<__E: SpanEncoder> Encodable<__E> for StableSince
impl<__E: SpanEncoder> Encodable<__E> for StableSince
source§impl Hash for StableSince
impl Hash for StableSince
source§impl<__CTX> HashStable<__CTX> for StableSincewhere
__CTX: HashStableContext,
impl<__CTX> HashStable<__CTX> for StableSincewhere
__CTX: HashStableContext,
fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)
source§impl PartialEq for StableSince
impl PartialEq for StableSince
source§fn eq(&self, other: &StableSince) -> bool
fn eq(&self, other: &StableSince) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.impl Copy for StableSince
impl Eq for StableSince
impl StructuralPartialEq for StableSince
Auto Trait Implementations§
impl RefUnwindSafe for StableSince
impl Send for StableSince
impl Sync for StableSince
impl Unpin for StableSince
impl UnwindSafe for StableSince
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: 8 bytes
Size for each variant:
Version
: 6 bytesCurrent
: 0 bytesErr
: 0 bytes