calc_graph

Struct Lazy

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pub struct Lazy<T, F>(/* private fields */);
Expand description

Calculates a node’s value by calling a function on demand and caching the result.

Trait Implementations§

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impl<T: Clone, F: FnOnce() -> T> Calc for Lazy<T, F>

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type Value = T

The type of values calculated by the node.
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fn add_dep(&mut self, _seen: &mut BitSet, _dep: NonZeroUsize)

When this node is used as a precedent, add_dep is called by dependent nodes when they are created. Read more
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fn eval(&mut self, _dirty: &mut BitSet) -> (NonZeroUsize, T)

Returns the value held within the node and the version number of the inputs used to calcuate that value. The value is recalculated if needed. Read more

Auto Trait Implementations§

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

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

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

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

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

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