observatory

Struct DerivationPtr

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pub struct DerivationPtr<T: IsUnchanged + 'static, F: FnMut() -> T + 'static> { /* private fields */ }

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impl<T: IsUnchanged + 'static, F: FnMut() -> T + 'static> DerivationPtr<T, F>

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pub fn new(compute_value: F) -> Self

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pub fn new_dyn( compute_value: F, ) -> DerivationPtr<T, Box<dyn FnMut() -> T + 'static>>

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pub fn computed(compute_value: F) -> Self

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pub fn borrow(&self) -> Ref<'_, T>

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pub fn borrow_untracked(&self) -> Ref<'_, T>

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impl<T: IsUnchanged + 'static, F: FnMut() -> T + 'static> Clone for DerivationPtr<T, F>

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fn clone(&self) -> Self

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

Performs copy-assignment from source. Read more

Auto Trait Implementations§

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impl<T, F> Freeze for DerivationPtr<T, F>

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impl<T, F> !RefUnwindSafe for DerivationPtr<T, F>

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impl<T, F> !Send for DerivationPtr<T, F>

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impl<T, F> !Sync for DerivationPtr<T, F>

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impl<T, F> Unpin for DerivationPtr<T, F>

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impl<T, F> !UnwindSafe for DerivationPtr<T, F>

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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, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> IsUnchanged for T

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default fn is_unchanged(&self, _other: &T) -> bool

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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.