Struct matrix_sdk_base :: ruma :: Signatures Copy item path

impl<E, K> Signatures<E, K>
where E: Ord, K: KeyName + ?Sized,

pub fn new() -> Signatures<E, K>

Creates an empty signature map.

pub fn insert_signature( &mut self, entity: E, key_identifier: OwnedKeyId<SigningKeyAlgorithm, K>, value: String, ) -> Option<String>

Add a signature for the given entity and key identifier.

If there was already one, it is returned.

Methods from Deref<Target = BTreeMap<E, BTreeMap<OwnedKeyId<SigningKeyAlgorithm, K>, String>>>§

1.0.0 · source

pub fn clear(&mut self)

Available on crate feature api and (crate features client or server) only.

Clears the map, removing all elements.

§Examples

use std::collections::BTreeMap;

let mut a = BTreeMap::new();
a.insert(1, "a");
a.clear();
assert!(a.is_empty());

1.0.0 · source

pub fn get<Q>(&self, key: &Q) -> Option<&V>
where K: Borrow<Q> + Ord, Q: Ord + ?Sized,

Available on crate feature api and (crate features client or server) only.

Returns a reference to the value corresponding to the key.

The key may be any borrowed form of the map’s key type, but the ordering on the borrowed form must match the ordering on the key type.

§Examples

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
map.insert(1, "a");
assert_eq!(map.get(&1), Some(&"a"));
assert_eq!(map.get(&2), None);

1.40.0 · source

pub fn get_key_value<Q>(&self, k: &Q) -> Option<(&K, &V)>
where K: Borrow<Q> + Ord, Q: Ord + ?Sized,

Available on crate feature api and (crate features client or server) only.

Returns the key-value pair corresponding to the supplied key.

The supplied key may be any borrowed form of the map’s key type, but the ordering on the borrowed form must match the ordering on the key type.

§Examples

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
map.insert(1, "a");
assert_eq!(map.get_key_value(&1), Some((&1, &"a")));
assert_eq!(map.get_key_value(&2), None);

1.66.0 · source

pub fn first_key_value(&self) -> Option<(&K, &V)>
where K: Ord,

Available on crate feature api and (crate features client or server) only.

Returns the first key-value pair in the map. The key in this pair is the minimum key in the map.

§Examples

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
assert_eq!(map.first_key_value(), None);
map.insert(1, "b");
map.insert(2, "a");
assert_eq!(map.first_key_value(), Some((&1, &"b")));

1.66.0 · source

pub fn first_entry(&mut self) -> Option<OccupiedEntry<'_, K, V, A>>
where K: Ord,

Available on crate feature api and (crate features client or server) only.

Returns the first entry in the map for in-place manipulation. The key of this entry is the minimum key in the map.

§Examples

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
map.insert(1, "a");
map.insert(2, "b");
if let Some(mut entry) = map.first_entry() {
    if *entry.key() > 0 {
        entry.insert("first");
    }
}
assert_eq!(*map.get(&1).unwrap(), "first");
assert_eq!(*map.get(&2).unwrap(), "b");

1.66.0 · source

pub fn pop_first(&mut self) -> Option<(K, V)>
where K: Ord,

Available on crate feature api and (crate features client or server) only.

Removes and returns the first element in the map. The key of this element is the minimum key that was in the map.

§Examples

Draining elements in ascending order, while keeping a usable map each iteration.

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
map.insert(1, "a");
map.insert(2, "b");
while let Some((key, _val)) = map.pop_first() {
    assert!(map.iter().all(|(k, _v)| *k > key));
}
assert!(map.is_empty());

1.66.0 · source

pub fn last_key_value(&self) -> Option<(&K, &V)>
where K: Ord,

Available on crate feature api and (crate features client or server) only.

Returns the last key-value pair in the map. The key in this pair is the maximum key in the map.

§Examples

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
map.insert(1, "b");
map.insert(2, "a");
assert_eq!(map.last_key_value(), Some((&2, &"a")));

1.66.0 · source

pub fn last_entry(&mut self) -> Option<OccupiedEntry<'_, K, V, A>>
where K: Ord,

Available on crate feature api and (crate features client or server) only.

Returns the last entry in the map for in-place manipulation. The key of this entry is the maximum key in the map.

§Examples

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
map.insert(1, "a");
map.insert(2, "b");
if let Some(mut entry) = map.last_entry() {
    if *entry.key() > 0 {
        entry.insert("last");
    }
}
assert_eq!(*map.get(&1).unwrap(), "a");
assert_eq!(*map.get(&2).unwrap(), "last");

1.66.0 · source

pub fn pop_last(&mut self) -> Option<(K, V)>
where K: Ord,

Available on crate feature api and (crate features client or server) only.

Removes and returns the last element in the map. The key of this element is the maximum key that was in the map.

§Examples

Draining elements in descending order, while keeping a usable map each iteration.

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
map.insert(1, "a");
map.insert(2, "b");
while let Some((key, _val)) = map.pop_last() {
    assert!(map.iter().all(|(k, _v)| *k < key));
}
assert!(map.is_empty());

1.0.0 · source

pub fn contains_key<Q>(&self, key: &Q) -> bool
where K: Borrow<Q> + Ord, Q: Ord + ?Sized,

Available on crate feature api and (crate features client or server) only.

Returns true if the map contains a value for the specified key.

The key may be any borrowed form of the map’s key type, but the ordering on the borrowed form must match the ordering on the key type.

§Examples

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
map.insert(1, "a");
assert_eq!(map.contains_key(&1), true);
assert_eq!(map.contains_key(&2), false);

1.0.0 · source

pub fn get_mut<Q>(&mut self, key: &Q) -> Option<&mut V>
where K: Borrow<Q> + Ord, Q: Ord + ?Sized,

Available on crate feature api and (crate features client or server) only.

Returns a mutable reference to the value corresponding to the key.

The key may be any borrowed form of the map’s key type, but the ordering on the borrowed form must match the ordering on the key type.

§Examples

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
map.insert(1, "a");
if let Some(x) = map.get_mut(&1) {
    *x = "b";
}
assert_eq!(map[&1], "b");

1.0.0 · source

pub fn insert(&mut self, key: K, value: V) -> Option<V>
where K: Ord,

Available on crate feature api and (crate features client or server) only.

Inserts a key-value pair into the map.

If the map did not have this key present, None is returned.

If the map did have this key present, the value is updated, and the old value is returned. The key is not updated, though; this matters for types that can be == without being identical. See the module-level documentation for more.

§Examples

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
assert_eq!(map.insert(37, "a"), None);
assert_eq!(map.is_empty(), false);

map.insert(37, "b");
assert_eq!(map.insert(37, "c"), Some("b"));
assert_eq!(map[&37], "c");

pub fn try_insert( &mut self, key: K, value: V, ) -> Result<&mut V, OccupiedError<'_, K, V, A>>
where K: Ord,

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

Available on crate feature api and (crate features client or server) only.

Tries to insert a key-value pair into the map, and returns a mutable reference to the value in the entry.

If the map already had this key present, nothing is updated, and an error containing the occupied entry and the value is returned.

§Examples

#![feature(map_try_insert)]

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
assert_eq!(map.try_insert(37, "a").unwrap(), &"a");

let err = map.try_insert(37, "b").unwrap_err();
assert_eq!(err.entry.key(), &37);
assert_eq!(err.entry.get(), &"a");
assert_eq!(err.value, "b");

1.0.0 · source

pub fn remove<Q>(&mut self, key: &Q) -> Option<V>
where K: Borrow<Q> + Ord, Q: Ord + ?Sized,

Available on crate feature api and (crate features client or server) only.

Removes a key from the map, returning the value at the key if the key was previously in the map.

The key may be any borrowed form of the map’s key type, but the ordering on the borrowed form must match the ordering on the key type.

§Examples

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
map.insert(1, "a");
assert_eq!(map.remove(&1), Some("a"));
assert_eq!(map.remove(&1), None);

1.45.0 · source

pub fn remove_entry<Q>(&mut self, key: &Q) -> Option<(K, V)>
where K: Borrow<Q> + Ord, Q: Ord + ?Sized,

Available on crate feature api and (crate features client or server) only.

Removes a key from the map, returning the stored key and value if the key was previously in the map.

The key may be any borrowed form of the map’s key type, but the ordering on the borrowed form must match the ordering on the key type.

§Examples

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
map.insert(1, "a");
assert_eq!(map.remove_entry(&1), Some((1, "a")));
assert_eq!(map.remove_entry(&1), None);

1.53.0 · source

pub fn retain<F>(&mut self, f: F)
where K: Ord, F: FnMut(&K, &mut V) -> bool,

Available on crate feature api and (crate features client or server) only.

Retains only the elements specified by the predicate.

In other words, remove all pairs (k, v) for which f(&k, &mut v) returns false. The elements are visited in ascending key order.

§Examples

use std::collections::BTreeMap;

let mut map: BTreeMap<i32, i32> = (0..8).map(|x| (x, x*10)).collect();
// Keep only the elements with even-numbered keys.
map.retain(|&k, _| k % 2 == 0);
assert!(map.into_iter().eq(vec![(0, 0), (2, 20), (4, 40), (6, 60)]));

1.11.0 · source

pub fn append(&mut self, other: &mut BTreeMap<K, V, A>)
where K: Ord, A: Clone,

Available on crate feature api and (crate features client or server) only.

Moves all elements from other into self, leaving other empty.

If a key from other is already present in self, the respective value from self will be overwritten with the respective value from other.

§Examples

use std::collections::BTreeMap;

let mut a = BTreeMap::new();
a.insert(1, "a");
a.insert(2, "b");
a.insert(3, "c"); // Note: Key (3) also present in b.

let mut b = BTreeMap::new();
b.insert(3, "d"); // Note: Key (3) also present in a.
b.insert(4, "e");
b.insert(5, "f");

a.append(&mut b);

assert_eq!(a.len(), 5);
assert_eq!(b.len(), 0);

assert_eq!(a[&1], "a");
assert_eq!(a[&2], "b");
assert_eq!(a[&3], "d"); // Note: "c" has been overwritten.
assert_eq!(a[&4], "e");
assert_eq!(a[&5], "f");

1.17.0 · source

pub fn range<T, R>(&self, range: R) -> Range<'_, K, V>
where T: Ord + ?Sized, K: Borrow<T> + Ord, R: RangeBounds<T>,

Available on crate feature api and (crate features client or server) only.

Constructs a double-ended iterator over a sub-range of elements in the map. The simplest way is to use the range syntax min..max, thus range(min..max) will yield elements from min (inclusive) to max (exclusive). The range may also be entered as (Bound<T>, Bound<T>), so for example range((Excluded(4), Included(10))) will yield a left-exclusive, right-inclusive range from 4 to 10.

§Panics

Panics if range start > end. Panics if range start == end and both bounds are Excluded.

§Examples

use std::collections::BTreeMap;
use std::ops::Bound::Included;

let mut map = BTreeMap::new();
map.insert(3, "a");
map.insert(5, "b");
map.insert(8, "c");
for (&key, &value) in map.range((Included(&4), Included(&8))) {
    println!("{key}: {value}");
}
assert_eq!(Some((&5, &"b")), map.range(4..).next());

1.17.0 · source

pub fn range_mut<T, R>(&mut self, range: R) -> RangeMut<'_, K, V>
where T: Ord + ?Sized, K: Borrow<T> + Ord, R: RangeBounds<T>,

Available on crate feature api and (crate features client or server) only.

Constructs a mutable double-ended iterator over a sub-range of elements in the map. The simplest way is to use the range syntax min..max, thus range(min..max) will yield elements from min (inclusive) to max (exclusive). The range may also be entered as (Bound<T>, Bound<T>), so for example range((Excluded(4), Included(10))) will yield a left-exclusive, right-inclusive range from 4 to 10.

§Panics

Panics if range start > end. Panics if range start == end and both bounds are Excluded.

§Examples

use std::collections::BTreeMap;

let mut map: BTreeMap<&str, i32> =
    [("Alice", 0), ("Bob", 0), ("Carol", 0), ("Cheryl", 0)].into();
for (_, balance) in map.range_mut("B".."Cheryl") {
    *balance += 100;
}
for (name, balance) in &map {
    println!("{name} => {balance}");
}

1.0.0 · source

pub fn entry(&mut self, key: K) -> Entry<'_, K, V, A>
where K: Ord,

Available on crate feature api and (crate features client or server) only.

Gets the given key’s corresponding entry in the map for in-place manipulation.

§Examples

use std::collections::BTreeMap;

let mut count: BTreeMap<&str, usize> = BTreeMap::new();

// count the number of occurrences of letters in the vec
for x in ["a", "b", "a", "c", "a", "b"] {
    count.entry(x).and_modify(|curr| *curr += 1).or_insert(1);
}

assert_eq!(count["a"], 3);
assert_eq!(count["b"], 2);
assert_eq!(count["c"], 1);

1.11.0 · source

pub fn split_off<Q>(&mut self, key: &Q) -> BTreeMap<K, V, A>
where Q: Ord + ?Sized, K: Borrow<Q> + Ord, A: Clone,

Available on crate feature api and (crate features client or server) only.

Splits the collection into two at the given key. Returns everything after the given key, including the key.

§Examples

use std::collections::BTreeMap;

let mut a = BTreeMap::new();
a.insert(1, "a");
a.insert(2, "b");
a.insert(3, "c");
a.insert(17, "d");
a.insert(41, "e");

let b = a.split_off(&3);

assert_eq!(a.len(), 2);
assert_eq!(b.len(), 3);

assert_eq!(a[&1], "a");
assert_eq!(a[&2], "b");

assert_eq!(b[&3], "c");
assert_eq!(b[&17], "d");
assert_eq!(b[&41], "e");

pub fn extract_if<F>(&mut self, pred: F) -> ExtractIf<'_, K, V, F, A>
where K: Ord, F: FnMut(&K, &mut V) -> bool,

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

Available on crate feature api and (crate features client or server) only.

Creates an iterator that visits all elements (key-value pairs) in ascending key order and uses a closure to determine if an element should be removed. If the closure returns true, the element is removed from the map and yielded. If the closure returns false, or panics, the element remains in the map and will not be yielded.

The iterator also lets you mutate the value of each element in the closure, regardless of whether you choose to keep or remove it.

If the returned ExtractIf is not exhausted, e.g. because it is dropped without iterating or the iteration short-circuits, then the remaining elements will be retained. Use retain with a negated predicate if you do not need the returned iterator.

§Examples

Splitting a map into even and odd keys, reusing the original map:

#![feature(btree_extract_if)]
use std::collections::BTreeMap;

let mut map: BTreeMap<i32, i32> = (0..8).map(|x| (x, x)).collect();
let evens: BTreeMap<_, _> = map.extract_if(|k, _v| k % 2 == 0).collect();
let odds = map;
assert_eq!(evens.keys().copied().collect::<Vec<_>>(), [0, 2, 4, 6]);
assert_eq!(odds.keys().copied().collect::<Vec<_>>(), [1, 3, 5, 7]);

1.0.0 · source

pub fn iter(&self) -> Iter<'_, K, V>

Available on crate feature api and (crate features client or server) only.

Gets an iterator over the entries of the map, sorted by key.

§Examples

use std::collections::BTreeMap;

let mut map = BTreeMap::new();
map.insert(3, "c");
map.insert(2, "b");
map.insert(1, "a");

for (key, value) in map.iter() {
    println!("{key}: {value}");
}

let (first_key, first_value) = map.iter().next().unwrap();
assert_eq!((*first_key, *first_value), (1, "a"));

1.0.0 · source

pub fn iter_mut(&mut self) -> IterMut<'_, K, V>

Available on crate feature api and (crate features client or server) only.

Gets a mutable iterator over the entries of the map, sorted by key.

§Examples

use std::collections::BTreeMap;

let mut map = BTreeMap::from([
   ("a", 1),
   ("b", 2),
   ("c", 3),
]);

// add 10 to the value if the key isn't "a"
for (key, value) in map.iter_mut() {
    if key != &"a" {
        *value += 10;
    }
}

1.0.0 · source

pub fn keys(&self) -> Keys<'_, K, V>

Available on crate feature api and (crate features client or server) only.

Gets an iterator over the keys of the map, in sorted order.

§Examples

use std::collections::BTreeMap;

let mut a = BTreeMap::new();
a.insert(2, "b");
a.insert(1, "a");

let keys: Vec<_> = a.keys().cloned().collect();
assert_eq!(keys, [1, 2]);

1.0.0 · source

pub fn values(&self) -> Values<'_, K, V>

Available on crate feature api and (crate features client or server) only.

Gets an iterator over the values of the map, in order by key.

§Examples

use std::collections::BTreeMap;

let mut a = BTreeMap::new();
a.insert(1, "hello");
a.insert(2, "goodbye");

let values: Vec<&str> = a.values().cloned().collect();
assert_eq!(values, ["hello", "goodbye"]);

1.10.0 · source

pub fn values_mut(&mut self) -> ValuesMut<'_, K, V>

Available on crate feature api and (crate features client or server) only.

Gets a mutable iterator over the values of the map, in order by key.

§Examples

use std::collections::BTreeMap;

let mut a = BTreeMap::new();
a.insert(1, String::from("hello"));
a.insert(2, String::from("goodbye"));

for value in a.values_mut() {
    value.push_str("!");
}

let values: Vec<String> = a.values().cloned().collect();
assert_eq!(values, [String::from("hello!"),
                    String::from("goodbye!")]);

1.0.0 · source

pub fn len(&self) -> usize

Available on crate feature api and (crate features client or server) only.

Returns the number of elements in the map.

§Examples

use std::collections::BTreeMap;

let mut a = BTreeMap::new();
assert_eq!(a.len(), 0);
a.insert(1, "a");
assert_eq!(a.len(), 1);

1.0.0 · source

pub fn is_empty(&self) -> bool

Available on crate feature api and (crate features client or server) only.

Returns true if the map contains no elements.

§Examples

use std::collections::BTreeMap;

let mut a = BTreeMap::new();
assert!(a.is_empty());
a.insert(1, "a");
assert!(!a.is_empty());

pub fn lower_bound<Q>(&self, bound: Bound<&Q>) -> Cursor<'_, K, V>
where K: Borrow<Q> + Ord, Q: Ord + ?Sized,

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

Available on crate feature api and (crate features client or server) only.

Returns a Cursor pointing at the gap before the smallest key greater than the given bound.

Passing Bound::Included(x) will return a cursor pointing to the gap before the smallest key greater than or equal to x.

Passing Bound::Excluded(x) will return a cursor pointing to the gap before the smallest key greater than x.

Passing Bound::Unbounded will return a cursor pointing to the gap before the smallest key in the map.

§Examples

#![feature(btree_cursors)]

use std::collections::BTreeMap;
use std::ops::Bound;

let map = BTreeMap::from([
    (1, "a"),
    (2, "b"),
    (3, "c"),
    (4, "d"),
]);

let cursor = map.lower_bound(Bound::Included(&2));
assert_eq!(cursor.peek_prev(), Some((&1, &"a")));
assert_eq!(cursor.peek_next(), Some((&2, &"b")));

let cursor = map.lower_bound(Bound::Excluded(&2));
assert_eq!(cursor.peek_prev(), Some((&2, &"b")));
assert_eq!(cursor.peek_next(), Some((&3, &"c")));

let cursor = map.lower_bound(Bound::Unbounded);
assert_eq!(cursor.peek_prev(), None);
assert_eq!(cursor.peek_next(), Some((&1, &"a")));

pub fn lower_bound_mut<Q>(&mut self, bound: Bound<&Q>) -> CursorMut<'_, K, V, A>
where K: Borrow<Q> + Ord, Q: Ord + ?Sized,

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

Available on crate feature api and (crate features client or server) only.

Returns a CursorMut pointing at the gap before the smallest key greater than the given bound.

Passing Bound::Included(x) will return a cursor pointing to the gap before the smallest key greater than or equal to x.

Passing Bound::Excluded(x) will return a cursor pointing to the gap before the smallest key greater than x.

Passing Bound::Unbounded will return a cursor pointing to the gap before the smallest key in the map.

§Examples

#![feature(btree_cursors)]

use std::collections::BTreeMap;
use std::ops::Bound;

let mut map = BTreeMap::from([
    (1, "a"),
    (2, "b"),
    (3, "c"),
    (4, "d"),
]);

let mut cursor = map.lower_bound_mut(Bound::Included(&2));
assert_eq!(cursor.peek_prev(), Some((&1, &mut "a")));
assert_eq!(cursor.peek_next(), Some((&2, &mut "b")));

let mut cursor = map.lower_bound_mut(Bound::Excluded(&2));
assert_eq!(cursor.peek_prev(), Some((&2, &mut "b")));
assert_eq!(cursor.peek_next(), Some((&3, &mut "c")));

let mut cursor = map.lower_bound_mut(Bound::Unbounded);
assert_eq!(cursor.peek_prev(), None);
assert_eq!(cursor.peek_next(), Some((&1, &mut "a")));

pub fn upper_bound<Q>(&self, bound: Bound<&Q>) -> Cursor<'_, K, V>
where K: Borrow<Q> + Ord, Q: Ord + ?Sized,

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

Available on crate feature api and (crate features client or server) only.

Returns a Cursor pointing at the gap after the greatest key smaller than the given bound.

Passing Bound::Included(x) will return a cursor pointing to the gap after the greatest key smaller than or equal to x.

Passing Bound::Excluded(x) will return a cursor pointing to the gap after the greatest key smaller than x.

Passing Bound::Unbounded will return a cursor pointing to the gap after the greatest key in the map.

§Examples

#![feature(btree_cursors)]

use std::collections::BTreeMap;
use std::ops::Bound;

let map = BTreeMap::from([
    (1, "a"),
    (2, "b"),
    (3, "c"),
    (4, "d"),
]);

let cursor = map.upper_bound(Bound::Included(&3));
assert_eq!(cursor.peek_prev(), Some((&3, &"c")));
assert_eq!(cursor.peek_next(), Some((&4, &"d")));

let cursor = map.upper_bound(Bound::Excluded(&3));
assert_eq!(cursor.peek_prev(), Some((&2, &"b")));
assert_eq!(cursor.peek_next(), Some((&3, &"c")));

let cursor = map.upper_bound(Bound::Unbounded);
assert_eq!(cursor.peek_prev(), Some((&4, &"d")));
assert_eq!(cursor.peek_next(), None);

pub fn upper_bound_mut<Q>(&mut self, bound: Bound<&Q>) -> CursorMut<'_, K, V, A>
where K: Borrow<Q> + Ord, Q: Ord + ?Sized,

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

Available on crate feature api and (crate features client or server) only.

Returns a CursorMut pointing at the gap after the greatest key smaller than the given bound.

Passing Bound::Included(x) will return a cursor pointing to the gap after the greatest key smaller than or equal to x.

Passing Bound::Excluded(x) will return a cursor pointing to the gap after the greatest key smaller than x.

Passing Bound::Unbounded will return a cursor pointing to the gap after the greatest key in the map.

§Examples

#![feature(btree_cursors)]

use std::collections::BTreeMap;
use std::ops::Bound;

let mut map = BTreeMap::from([
    (1, "a"),
    (2, "b"),
    (3, "c"),
    (4, "d"),
]);

let mut cursor = map.upper_bound_mut(Bound::Included(&3));
assert_eq!(cursor.peek_prev(), Some((&3, &mut "c")));
assert_eq!(cursor.peek_next(), Some((&4, &mut "d")));

let mut cursor = map.upper_bound_mut(Bound::Excluded(&3));
assert_eq!(cursor.peek_prev(), Some((&2, &mut "b")));
assert_eq!(cursor.peek_next(), Some((&3, &mut "c")));

let mut cursor = map.upper_bound_mut(Bound::Unbounded);
assert_eq!(cursor.peek_prev(), Some((&4, &mut "d")));
assert_eq!(cursor.peek_next(), None);

Trait Implementations§

impl<E, K> Clone for Signatures<E, K>
where E: Ord + Clone, K: KeyName + ?Sized,

fn clone(&self) -> Signatures<E, K>

Returns a copy of the value. Read more

fn from( value: [(E, OwnedKeyId<SigningKeyAlgorithm, K>, String); N], ) -> Signatures<E, K>

Converts to this type from the input type.

impl<E, K> FromIterator<(E, OwnedKeyId<SigningKeyAlgorithm, K>, String)> for Signatures<E, K>
where E: Ord, K: KeyName + ?Sized,

fn from_iter<T>(iter: T) -> Signatures<E, K>
where T: IntoIterator<Item = (E, OwnedKeyId<SigningKeyAlgorithm, K>, String)>,

Creates a value from an iterator. Read more

fn compat_ref(&self) -> Compat<&T>

Applies the [Compat] adapter by shared reference. Read more

Clone a handle Read more

fn consume_handle(handle: Handle) -> Arc<T>

Consume a handle, getting back the initial Arc<>

Proof that Self is the same type as Self::Type, provides methods for casting between Self and Self::Type.

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

impl<T, U> Into for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

fn vzip(self) -> V

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more

impl<T> AsyncTraitDeps for T
where T: Debug + SendOutsideWasm + SyncOutsideWasm,

impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

impl<T> SendOutsideWasm for T
where T: Send,