Enum cosmic_text::Cached

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pub enum Cached<T: Clone + Debug> {
    Empty,
    Unused(T),
    Used(T),
}
Expand description

Helper for caching a value when the value is optionally present in the ‘unused’ state.

Variants§

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Empty

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Unused(T)

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Used(T)

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impl<T: Clone + Debug> Cached<T>

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

Gets the value if in state Self::Used.

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

Gets the value mutably if in state Self::Used.

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pub fn is_unused(&self) -> bool

Checks if the value is empty or unused.

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pub fn is_used(&self) -> bool

Checks if the value is used (i.e. cached for access).

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

Takes the buffered value if in state Self::Unused.

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

Takes the cached value if in state Self::Used.

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pub fn set_unused(&mut self)

Moves the value from Self::Used to Self::Unused.

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pub fn set_used(&mut self, val: T)

Sets the value to Self::Used.

Trait Implementations§

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impl<T: Clone + Clone + Debug> Clone for Cached<T>

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

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T: Debug + Clone + Debug> Debug for Cached<T>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<T> Freeze for Cached<T>
where T: Freeze,

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impl<T> RefUnwindSafe for Cached<T>
where T: RefUnwindSafe,

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impl<T> Send for Cached<T>
where T: Send,

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impl<T> Sync for Cached<T>
where T: Sync,

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impl<T> Unpin for Cached<T>
where T: Unpin,

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impl<T> UnwindSafe for Cached<T>
where T: UnwindSafe,

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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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
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> IntoEither for T

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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
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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
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.