[−][src]Struct maybe_cell::unchecked::Maybe
Equivalent to an UnsafeCell<MaybeUninit<T>>
, this cell may hold uninitialized data.
Implementations
impl<T> Maybe<T>
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pub const fn empty() -> Self
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Create a new, empty Maybe<T>
.
pub const fn new(data: T) -> Self
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Create a new, populated Maybe<T>
.
pub unsafe fn as_ptr(&self) -> *const T
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Access the contained value as a constant pointer.
pub unsafe fn as_mut_ptr(&mut self) -> *mut T
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Access the contained value as a mutable pointer.
pub unsafe fn as_ref(&self) -> &T
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Obtain a reference to the contained value. This method is unsafe
because
the value may not have been initialized.
pub unsafe fn as_mut(&mut self) -> &mut T
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Obtain a mutable reference to the contained value.
pub fn set_loaded(&self, _loaded: bool)
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Override the loaded
flag of the cell. This method is a no-op when using the
unchecked implementation. It may be used when a value is inserted manually,
for example by assigning to the dereferenced pointer.
pub unsafe fn clear(&self)
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Drop the contained value in place.
pub unsafe fn load(&self) -> T
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Load the contained value.
pub unsafe fn replace(&self, value: T) -> T
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Store a new value in an occupied cell.
pub unsafe fn store(&self, value: T)
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Store a new value in an empty cell.
Trait Implementations
Auto Trait Implementations
impl<T> !RefUnwindSafe for Maybe<T>
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impl<T> Send for Maybe<T> where
T: Send,
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T: Send,
impl<T> !Sync for Maybe<T>
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impl<T> Unpin for Maybe<T> where
T: Unpin,
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T: Unpin,
impl<T> UnwindSafe for Maybe<T> where
T: UnwindSafe,
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T: UnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<!> for T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,