Step

Enum Step 

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pub enum Step<'a, N: Node> {
    Resolved(&'a N),
    Unresolved(&'a N::DependencyType),
}
Expand description

Wrapper around dependency graph nodes. Since a graph might have dependencies that cannot be resolved internally, this wrapper is necessary to differentiate between internally resolved and externally (unresolved) dependencies. An Unresolved dependency does not necessarily mean that it cannot be resolved, only that no Node within the graph fulfills it.

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Resolved(&'a N)

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Unresolved(&'a N::DependencyType)

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impl<'a, N: Node> Step<'a, N>

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pub fn is_resolved(&self) -> bool

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pub fn as_resolved(&self) -> Option<&N>

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pub fn as_unresolved(&self) -> Option<&N::DependencyType>

Auto Trait Implementations§

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impl<'a, N> Freeze for Step<'a, N>

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impl<'a, N> RefUnwindSafe for Step<'a, N>

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impl<'a, N> Send for Step<'a, N>
where N: Sync, <N as Node>::DependencyType: Sync,

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impl<'a, N> Sync for Step<'a, N>
where N: Sync, <N as Node>::DependencyType: Sync,

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impl<'a, N> Unpin for Step<'a, N>

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impl<'a, N> UnwindSafe for Step<'a, N>

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, 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.