Enum intrusive_collections::rbtree::Entry

source · 
pub enum Entry<'a, A: Adapter>
where
    A::LinkOps: RBTreeOps,
{
    Occupied(CursorMut<'a, A>),
    Vacant(InsertCursor<'a, A>),
}
Expand description

An entry in a RBTree.

See the documentation for RBTree::entry.

Variants§

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Occupied(CursorMut<'a, A>)

An occupied entry.

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Vacant(InsertCursor<'a, A>)

A vacant entry.

Implementations§

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impl<'a, A: Adapter + 'a> Entry<'a, A>
where A::LinkOps: RBTreeOps,

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pub fn or_insert( self, val: <A::PointerOps as PointerOps>::Pointer, ) -> CursorMut<'a, A>

Inserts an element into the RBTree if the entry is vacant, returning a CursorMut to the resulting value. If the entry is occupied then a CursorMut pointing to the element is returned.

§Panics

Panics if the Entry is vacant and the new element is already linked to a different intrusive collection.

source

pub fn or_insert_with<F>(self, default: F) -> CursorMut<'a, A>
where F: FnOnce() -> <A::PointerOps as PointerOps>::Pointer,

Calls the given function and inserts the result into the RBTree if the entry is vacant, returning a CursorMut to the resulting value. If the entry is occupied then a CursorMut pointing to the element is returned and the function is not executed.

§Panics

Panics if the Entry is vacant and the new element is already linked to a different intrusive collection.

Auto Trait Implementations§

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impl<'a, A> Freeze for Entry<'a, A>
where <<A as Adapter>::LinkOps as LinkOps>::LinkPtr: Freeze,

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impl<'a, A> RefUnwindSafe for Entry<'a, A>
where <<A as Adapter>::LinkOps as LinkOps>::LinkPtr: RefUnwindSafe, A: RefUnwindSafe,

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impl<'a, A> Send for Entry<'a, A>
where <<A as Adapter>::LinkOps as LinkOps>::LinkPtr: Send, A: Send, <<A as Adapter>::PointerOps as PointerOps>::Pointer: Send,

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impl<'a, A> Sync for Entry<'a, A>
where <<A as Adapter>::LinkOps as LinkOps>::LinkPtr: Sync, A: Sync, <<A as Adapter>::PointerOps as PointerOps>::Value: Sync,

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impl<'a, A> Unpin for Entry<'a, A>
where <<A as Adapter>::LinkOps as LinkOps>::LinkPtr: Unpin,

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impl<'a, A> !UnwindSafe for Entry<'a, A>

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.