pub struct PodOption<T: Nullable>(/* private fields */);
Expand description
A “pod-enabled” type that can be used as an Option<T>
without
requiring extra space to indicate if the value is Some
or None
.
This can be used when a specific value of T
indicates that its
value is None
.
Implementations§
Trait Implementations§
Source§impl<T: Nullable> Zeroable for PodOption<T>
impl<T: Nullable> Zeroable for PodOption<T>
§Safety
PodOption
is a transparent wrapper around a Pod
type T
with identical
data representation.
impl<T: Copy + Nullable> Copy for PodOption<T>
impl<T: Eq + Nullable> Eq for PodOption<T>
impl<T: Nullable> Pod for PodOption<T>
§Safety
PodOption
is a transparent wrapper around a Pod
type T
with identical
data representation.
impl<T: Nullable> StructuralPartialEq for PodOption<T>
Auto Trait Implementations§
impl<T> Freeze for PodOption<T>where
T: Freeze,
impl<T> RefUnwindSafe for PodOption<T>where
T: RefUnwindSafe,
impl<T> Send for PodOption<T>where
T: Send,
impl<T> Sync for PodOption<T>where
T: Sync,
impl<T> Unpin for PodOption<T>where
T: Unpin,
impl<T> UnwindSafe for PodOption<T>where
T: UnwindSafe,
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
Source§impl<T> CheckedBitPattern for Twhere
T: AnyBitPattern,
impl<T> CheckedBitPattern for Twhere
T: AnyBitPattern,
Source§type Bits = T
type Bits = T
Self
must have the same layout as the specified Bits
except for
the possible invalid bit patterns being checked during
is_valid_bit_pattern
.Source§fn is_valid_bit_pattern(_bits: &T) -> bool
fn is_valid_bit_pattern(_bits: &T) -> bool
If this function returns true, then it must be valid to reinterpret
bits
as &Self
.Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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 more