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>>() == 0
align_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 copy 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.