Struct rocket::mtls::oid::asn1_rs::nom::lib::std::collections::btree_set::Cursor

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pub struct Cursor<'a, K>
where K: 'a,
{ /* private fields */ }
🔬This is a nightly-only experimental API. (btree_cursors)
Available on crate feature mtls only.
Expand description

A cursor over a BTreeSet.

A Cursor is like an iterator, except that it can freely seek back-and-forth.

Cursors always point to a gap between two elements in the set, and can operate on the two immediately adjacent elements.

A Cursor is created with the BTreeSet::lower_bound and BTreeSet::upper_bound methods.

Implementations§

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impl<'a, K> Cursor<'a, K>

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pub fn next(&mut self) -> Option<&'a K>

🔬This is a nightly-only experimental API. (btree_cursors)

Advances the cursor to the next gap, returning the element that it moved over.

If the cursor is already at the end of the set then None is returned and the cursor is not moved.

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pub fn prev(&mut self) -> Option<&'a K>

🔬This is a nightly-only experimental API. (btree_cursors)

Advances the cursor to the previous gap, returning the element that it moved over.

If the cursor is already at the start of the set then None is returned and the cursor is not moved.

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pub fn peek_next(&self) -> Option<&'a K>

🔬This is a nightly-only experimental API. (btree_cursors)

Returns a reference to next element without moving the cursor.

If the cursor is at the end of the set then None is returned

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pub fn peek_prev(&self) -> Option<&'a K>

🔬This is a nightly-only experimental API. (btree_cursors)

Returns a reference to the previous element without moving the cursor.

If the cursor is at the start of the set then None is returned.

Trait Implementations§

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impl<'a, K> Clone for Cursor<'a, K>
where K: Clone + 'a,

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fn clone(&self) -> Cursor<'a, K>

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<K> Debug for Cursor<'_, K>
where K: Debug,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a, K> Freeze for Cursor<'a, K>

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impl<'a, K> RefUnwindSafe for Cursor<'a, K>
where K: RefUnwindSafe,

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impl<'a, K> Send for Cursor<'a, K>
where K: Sync,

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impl<'a, K> Sync for Cursor<'a, K>
where K: Sync,

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impl<'a, K> Unpin for Cursor<'a, K>

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impl<'a, K> UnwindSafe for Cursor<'a, K>
where K: RefUnwindSafe,

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where T: 'static + ?Sized,

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