pub struct PhantomInvariantLifetime<'a>(/* private fields */);๐ฌThis is a nightly-only experimental API. (
phantom_variance_markers)Expand description
Zero-sized type used to mark a lifetime as invariant.
Invariant lifetimes must be live for the exact length declared, neither shorter nor longer. See the reference for more information.
ยงLayout
For all 'a, the following are guaranteed:
size_of::<PhantomInvariantLifetime<'a>>() == 0align_of::<PhantomInvariantLifetime<'a>>() == 1
Implementationsยง
Sourceยงimpl PhantomInvariantLifetime<'_>
impl PhantomInvariantLifetime<'_>
Sourcepub const fn new() -> PhantomInvariantLifetime<'_>
๐ฌThis is a nightly-only experimental API. (phantom_variance_markers)
pub const fn new() -> PhantomInvariantLifetime<'_>
phantom_variance_markers)Constructs a new instance of the variance marker.
Trait Implementationsยง
Sourceยงimpl<'a> Clone for PhantomInvariantLifetime<'a>
impl<'a> Clone for PhantomInvariantLifetime<'a>
Sourceยงfn clone(&self) -> PhantomInvariantLifetime<'a>
fn clone(&self) -> PhantomInvariantLifetime<'a>
Returns a duplicate of the value. Read more
1.0.0 ยท Sourceยงfn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moreSourceยงimpl Debug for PhantomInvariantLifetime<'_>
impl Debug for PhantomInvariantLifetime<'_>
Sourceยงimpl<'a> Default for PhantomInvariantLifetime<'a>
impl<'a> Default for PhantomInvariantLifetime<'a>
Sourceยงfn default() -> PhantomInvariantLifetime<'a>
fn default() -> PhantomInvariantLifetime<'a>
Returns the โdefault valueโ for a type. Read more
Sourceยงimpl<'a> Hash for PhantomInvariantLifetime<'a>
impl<'a> Hash for PhantomInvariantLifetime<'a>
Sourceยงimpl<'a> Ord for PhantomInvariantLifetime<'a>
impl<'a> Ord for PhantomInvariantLifetime<'a>
Sourceยงfn cmp(&self, other: &PhantomInvariantLifetime<'a>) -> Ordering
fn cmp(&self, other: &PhantomInvariantLifetime<'a>) -> Ordering
1.21.0 ยท Sourceยงfn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
Compares and returns the maximum of two values. Read more
Sourceยงimpl<'a> PartialEq for PhantomInvariantLifetime<'a>
impl<'a> PartialEq for PhantomInvariantLifetime<'a>
Sourceยงfn eq(&self, other: &PhantomInvariantLifetime<'a>) -> bool
fn eq(&self, other: &PhantomInvariantLifetime<'a>) -> bool
Tests for
self and other values to be equal, and is used by ==.Sourceยงimpl<'a> PartialOrd for PhantomInvariantLifetime<'a>
impl<'a> PartialOrd for PhantomInvariantLifetime<'a>
impl<'a> Copy for PhantomInvariantLifetime<'a>
impl<'a> Eq for PhantomInvariantLifetime<'a>
impl<'a> StructuralPartialEq for PhantomInvariantLifetime<'a>
impl Variance for PhantomInvariantLifetime<'_>
Auto Trait Implementationsยง
impl<'a> Freeze for PhantomInvariantLifetime<'a>
impl<'a> RefUnwindSafe for PhantomInvariantLifetime<'a>
impl<'a> Send for PhantomInvariantLifetime<'a>
impl<'a> Sync for PhantomInvariantLifetime<'a>
impl<'a> Unpin for PhantomInvariantLifetime<'a>
impl<'a> UnwindSafe for PhantomInvariantLifetime<'a>
Blanket Implementationsยง
Sourceยงimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Sourceยงfn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Sourceยงimpl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Sourceยงimpl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
Sourceยงimpl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Sourceยงfn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key and return true if they are equal.Sourceยงimpl<T> FmtForward for T
impl<T> FmtForward for T
Sourceยงfn fmt_binary(self) -> FmtBinary<Self>where
Self: Binary,
fn fmt_binary(self) -> FmtBinary<Self>where
Self: Binary,
Causes
self to use its Binary implementation when Debug-formatted.Sourceยงfn fmt_display(self) -> FmtDisplay<Self>where
Self: Display,
fn fmt_display(self) -> FmtDisplay<Self>where
Self: Display,
Causes
self to use its Display implementation when
Debug-formatted.Sourceยงfn fmt_lower_exp(self) -> FmtLowerExp<Self>where
Self: LowerExp,
fn fmt_lower_exp(self) -> FmtLowerExp<Self>where
Self: LowerExp,
Causes
self to use its LowerExp implementation when
Debug-formatted.Sourceยงfn fmt_lower_hex(self) -> FmtLowerHex<Self>where
Self: LowerHex,
fn fmt_lower_hex(self) -> FmtLowerHex<Self>where
Self: LowerHex,
Causes
self to use its LowerHex implementation when
Debug-formatted.Sourceยงfn fmt_octal(self) -> FmtOctal<Self>where
Self: Octal,
fn fmt_octal(self) -> FmtOctal<Self>where
Self: Octal,
Causes
self to use its Octal implementation when Debug-formatted.Sourceยงfn fmt_pointer(self) -> FmtPointer<Self>where
Self: Pointer,
fn fmt_pointer(self) -> FmtPointer<Self>where
Self: Pointer,
Causes
self to use its Pointer implementation when
Debug-formatted.Sourceยงfn fmt_upper_exp(self) -> FmtUpperExp<Self>where
Self: UpperExp,
fn fmt_upper_exp(self) -> FmtUpperExp<Self>where
Self: UpperExp,
Causes
self to use its UpperExp implementation when
Debug-formatted.Sourceยงfn fmt_upper_hex(self) -> FmtUpperHex<Self>where
Self: UpperHex,
fn fmt_upper_hex(self) -> FmtUpperHex<Self>where
Self: UpperHex,
Causes
self to use its UpperHex implementation when
Debug-formatted.Sourceยงimpl<T> IntoEither for T
impl<T> IntoEither for T
Sourceยงfn into_either(self, into_left: bool) -> Either<Self, Self> โ
fn into_either(self, into_left: bool) -> Either<Self, Self> โ
Converts
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSourceยงfn into_either_with<F>(self, into_left: F) -> Either<Self, Self> โ
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> โ
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSourceยงimpl<T> Pipe for Twhere
T: ?Sized,
impl<T> Pipe for Twhere
T: ?Sized,
Sourceยงfn pipe<R>(self, func: impl FnOnce(Self) -> R) -> Rwhere
Self: Sized,
fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> Rwhere
Self: Sized,
Pipes by value. This is generally the method you want to use. Read more
Sourceยงfn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> Rwhere
R: 'a,
fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> Rwhere
R: 'a,
Borrows
self and passes that borrow into the pipe function. Read moreSourceยงfn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> Rwhere
R: 'a,
fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> Rwhere
R: 'a,
Mutably borrows
self and passes that borrow into the pipe function. Read moreSourceยงfn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R
fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R
Sourceยงfn pipe_borrow_mut<'a, B, R>(
&'a mut self,
func: impl FnOnce(&'a mut B) -> R,
) -> R
fn pipe_borrow_mut<'a, B, R>( &'a mut self, func: impl FnOnce(&'a mut B) -> R, ) -> R
Sourceยงfn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R
fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R
Borrows
self, then passes self.as_ref() into the pipe function.Sourceยงfn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
Mutably borrows
self, then passes self.as_mut() into the pipe
function.Sourceยงfn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
Borrows
self, then passes self.deref() into the pipe function.Sourceยงimpl<T> Tap for T
impl<T> Tap for T
Sourceยงfn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self
fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self
Immutable access to the
Borrow<B> of a value. Read moreSourceยงfn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self
fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self
Mutable access to the
BorrowMut<B> of a value. Read moreSourceยงfn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
Immutable access to the
AsRef<R> view of a value. Read moreSourceยงfn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
Mutable access to the
AsMut<R> view of a value. Read moreSourceยงfn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
Immutable access to the
Deref::Target of a value. Read moreSourceยงfn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
Mutable access to the
Deref::Target of a value. Read moreSourceยงfn tap_dbg(self, func: impl FnOnce(&Self)) -> Self
fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self
Calls
.tap() only in debug builds, and is erased in release builds.Sourceยงfn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self
fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self
Calls
.tap_mut() only in debug builds, and is erased in release
builds.Sourceยงfn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self
fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self
Calls
.tap_borrow() only in debug builds, and is erased in release
builds.Sourceยงfn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
Calls
.tap_borrow_mut() only in debug builds, and is erased in release
builds.Sourceยงfn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
Calls
.tap_ref() only in debug builds, and is erased in release
builds.Sourceยงfn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
Calls
.tap_ref_mut() only in debug builds, and is erased in release
builds.Sourceยงfn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
Calls
.tap_deref() only in debug builds, and is erased in release
builds.