Struct spl_pod::option::PodOption

source · 
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§

source§

impl<T: Nullable> PodOption<T>

source

pub fn get(self) -> Option<T>

Returns the contained value as an Option.

source

pub fn as_ref(&self) -> Option<&T>

Returns the contained value as an Option.

source

pub fn as_mut(&mut self) -> Option<&mut T>

Returns the contained value as a mutable Option.

Trait Implementations§

source§

impl<T: Clone + Nullable> Clone for PodOption<T>

source§

fn clone(&self) -> PodOption<T>

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
source§

impl<T: Debug + Nullable> Debug for PodOption<T>

source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
source§

impl<T: Nullable> From<T> for PodOption<T>

source§

fn from(value: T) -> Self

Converts to this type from the input type.
source§

impl<T: Hash + Nullable> Hash for PodOption<T>

source§

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
1.3.0 · source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
source§

impl<T: PartialEq + Nullable> PartialEq for PodOption<T>

source§

fn eq(&self, other: &PodOption<T>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
source§

impl<T: Nullable> TryFrom<COption<T>> for PodOption<T>

§

type Error = ProgramError

The type returned in the event of a conversion error.
source§

fn try_from(value: COption<T>) -> Result<Self, Self::Error>

Performs the conversion.
source§

impl<T: Nullable> TryFrom<Option<T>> for PodOption<T>

§

type Error = ProgramError

The type returned in the event of a conversion error.
source§

fn try_from(value: Option<T>) -> Result<Self, Self::Error>

Performs the conversion.
source§

impl<T: Nullable> Zeroable for PodOption<T>

§Safety

PodOption is a transparent wrapper around a Pod type T with identical data representation.

source§

fn zeroed() -> Self

Calls zeroed. Read more
source§

impl<T: Copy + Nullable> Copy for PodOption<T>

source§

impl<T: Eq + Nullable> Eq for PodOption<T>

source§

impl<T: Nullable> Pod for PodOption<T>

§Safety

PodOption is a transparent wrapper around a Pod type T with identical data representation.

source§

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> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> CheckedBitPattern for T
where T: AnyBitPattern,

§

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

If this function returns true, then it must be valid to reinterpret bits as &Self.
source§

impl<T> CloneToUninit for T
where T: Clone,

source§

default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
source§

impl<T> CloneToUninit for T
where T: Copy,

source§

unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
source§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

source§

fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T> IntoEither for T

source§

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 more
source§

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

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
source§

impl<T> Same for T

§

type Output = T

Should always be Self
source§

impl<T> ToOwned for T
where T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

source§

fn vzip(self) -> V

source§

impl<T> AnyBitPattern for T
where T: Pod,

source§

impl<T> NoUninit for T
where T: Pod,