Struct abi_stable::type_layout::LifetimeIndex [−][src]
#[repr(transparent)]pub struct LifetimeIndex { /* fields omitted */ }
Expand description
Which lifetime is being referenced by a field. Allows lifetimes to be renamed,so long as the “same” lifetime is being referenced.
Implementations
A sentinel value to represent the absence of a lifetime.
Making this be all zeroes allows using u32::leading_zeros
to calculate the length of LifetimeIndexArray .
A lifetime parameter in a function pointer that is only used once, and does not appear in the return type.
The maximum number of lifetime parameters.
Constructs a LifetimeIndex to the nth lifetime parameter of a type.
Gets which lifetiem parameter this is. Returns None if it’s not a lifetime parameter.
Trait Implementations
type StaticEquivalent = _static_LifetimeIndex
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
type IsNonZeroType = <u8 as __StableAbi>::IsNonZeroType
type IsNonZeroType = <u8 as __StableAbi>::IsNonZeroType
Whether this type has a single invalid bit-pattern. Read more
The layout of the type provided by implementors.
const
-equivalents of the associated types.
Auto Trait Implementations
impl RefUnwindSafe for LifetimeIndex
impl Send for LifetimeIndex
impl Sync for LifetimeIndex
impl Unpin for LifetimeIndex
impl UnwindSafe for LifetimeIndex
Blanket Implementations
Mutably borrows from an owned value. Read more
type ROwned = T
type ROwned = T
The owned type, stored in RCow::Owned
type ForSelf = WithMetadata_<T, T>
type ForSelf = WithMetadata_<T, T>
This is always WithMetadata_<Self, Self>
Compares the address of self
with the address of other
. Read more
Emulates the pipeline operator, allowing method syntax in more places. Read more
The same as piped
except that the function takes &Self
Useful for functions that take &Self
instead of Self
. Read more
The same as piped
, except that the function takes &mut Self
.
Useful for functions that take &mut Self
instead of Self
. Read more
Mutates self using a closure taking self by mutable reference, passing it along the method chain. Read more
Observes the value of self, passing it along unmodified. Useful in long method chains. Read more
Performs a conversion with Into
.
using the turbofish .into_::<_>()
syntax. Read more
Performs a reference to reference conversion with AsRef
,
using the turbofish .as_ref_::<_>()
syntax. Read more
Performs a mutable reference to mutable reference conversion with AsMut
,
using the turbofish .as_mut_::<_>()
syntax. Read more
unsafe fn transmute_element<T>(
self
) -> <Self as CanTransmuteElement<T>>::TransmutedPtr where
Self: CanTransmuteElement<T>,
unsafe fn transmute_element<T>(
self
) -> <Self as CanTransmuteElement<T>>::TransmutedPtr where
Self: CanTransmuteElement<T>,
Transmutes the element type of this pointer.. Read more
type Type = T
type Type = T
This is always Self
.
Converts a value back to the original type.
Converts a mutable reference back to the original type.
alloc
only.Converts a box back to the original type.
Converts a value back to the original type.
Converts a reference back to the original type.
Converts a mutable reference back to the original type.
alloc
only.Converts a box back to the original type.
alloc
only.Converts an Arc back to the original type.
alloc
only.Converts an Rc back to the original type.