Struct rstubs::util::once::Lazy

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pub struct Lazy<T: Send, F: FnOnce() -> T + Clone> {
    constructor: F,
    once: Once<T>,
}
Expand description

A lazy value that is initialized at most once.

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§constructor: F§once: Once<T>

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impl<T: Send, F: FnOnce() -> T + Clone> Lazy<T, F>

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pub const fn new(f: F) -> Self

Trait Implementations§

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impl<T: Send, F: FnOnce() -> T + Clone> Deref for Lazy<T, F>

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type Target = T

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.

Auto Trait Implementations§

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

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impl<T, F> Send for Lazy<T, F>
where F: Send,

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impl<T, F> Sync for Lazy<T, F>
where F: Sync,

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impl<T, F> Unpin for Lazy<T, F>
where F: Unpin, T: Unpin,

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impl<T, F> UnwindSafe for Lazy<T, F>
where F: UnwindSafe, T: UnwindSafe,

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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> 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, 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.