Struct matrix_sdk::ruma::events::receipt::ReceiptEventContent
source · pub struct ReceiptEventContent(pub BTreeMap<OwnedEventId, BTreeMap<ReceiptType, BTreeMap<OwnedUserId, Receipt>>>);
Expand description
The content of an m.receipt
event.
A mapping of event ID to a collection of receipts for this event ID. The event ID is the ID of the event being acknowledged and not an ID for the receipt itself.
Tuple Fields§
§0: BTreeMap<OwnedEventId, BTreeMap<ReceiptType, BTreeMap<OwnedUserId, Receipt>>>
Implementations§
source§impl ReceiptEventContent
impl ReceiptEventContent
sourcepub fn user_receipt(
&self,
user_id: &UserId,
receipt_type: ReceiptType,
) -> Option<(&EventId, &Receipt)>
pub fn user_receipt( &self, user_id: &UserId, receipt_type: ReceiptType, ) -> Option<(&EventId, &Receipt)>
Get the receipt for the given user ID with the given receipt type, if it exists.
Methods from Deref<Target = BTreeMap<OwnedEventId, BTreeMap<ReceiptType, BTreeMap<OwnedUserId, Receipt>>>>§
1.0.0 · sourcepub fn clear(&mut self)
pub fn clear(&mut self)
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 · sourcepub fn get<Q>(&self, key: &Q) -> Option<&V>
pub fn get<Q>(&self, key: &Q) -> Option<&V>
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 · sourcepub fn get_key_value<Q>(&self, k: &Q) -> Option<(&K, &V)>
pub fn get_key_value<Q>(&self, k: &Q) -> Option<(&K, &V)>
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 · sourcepub fn first_key_value(&self) -> Option<(&K, &V)>where
K: Ord,
pub fn first_key_value(&self) -> Option<(&K, &V)>where
K: Ord,
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 · sourcepub fn first_entry(&mut self) -> Option<OccupiedEntry<'_, K, V, A>>where
K: Ord,
pub fn first_entry(&mut self) -> Option<OccupiedEntry<'_, K, V, A>>where
K: Ord,
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 · sourcepub fn pop_first(&mut self) -> Option<(K, V)>where
K: Ord,
pub fn pop_first(&mut self) -> Option<(K, V)>where
K: Ord,
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 · sourcepub fn last_key_value(&self) -> Option<(&K, &V)>where
K: Ord,
pub fn last_key_value(&self) -> Option<(&K, &V)>where
K: Ord,
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 · sourcepub fn last_entry(&mut self) -> Option<OccupiedEntry<'_, K, V, A>>where
K: Ord,
pub fn last_entry(&mut self) -> Option<OccupiedEntry<'_, K, V, A>>where
K: Ord,
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 · sourcepub fn pop_last(&mut self) -> Option<(K, V)>where
K: Ord,
pub fn pop_last(&mut self) -> Option<(K, V)>where
K: Ord,
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 · sourcepub fn contains_key<Q>(&self, key: &Q) -> bool
pub fn contains_key<Q>(&self, key: &Q) -> bool
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 · sourcepub fn get_mut<Q>(&mut self, key: &Q) -> Option<&mut V>
pub fn get_mut<Q>(&mut self, key: &Q) -> Option<&mut V>
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 · sourcepub fn insert(&mut self, key: K, value: V) -> Option<V>where
K: Ord,
pub fn insert(&mut self, key: K, value: V) -> Option<V>where
K: Ord,
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");
sourcepub 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
)
pub fn try_insert(
&mut self,
key: K,
value: V,
) -> Result<&mut V, OccupiedError<'_, K, V, A>>where
K: Ord,
map_try_insert
)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 · sourcepub fn remove<Q>(&mut self, key: &Q) -> Option<V>
pub fn remove<Q>(&mut self, key: &Q) -> Option<V>
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 · sourcepub fn remove_entry<Q>(&mut self, key: &Q) -> Option<(K, V)>
pub fn remove_entry<Q>(&mut self, key: &Q) -> Option<(K, V)>
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 · sourcepub fn retain<F>(&mut self, f: F)
pub fn retain<F>(&mut self, f: F)
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 · sourcepub fn append(&mut self, other: &mut BTreeMap<K, V, A>)
pub fn append(&mut self, other: &mut BTreeMap<K, V, A>)
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 · sourcepub fn range<T, R>(&self, range: R) -> Range<'_, K, V>
pub fn range<T, R>(&self, range: R) -> Range<'_, K, V>
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 · sourcepub fn range_mut<T, R>(&mut self, range: R) -> RangeMut<'_, K, V>
pub fn range_mut<T, R>(&mut self, range: R) -> RangeMut<'_, K, V>
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 · sourcepub fn entry(&mut self, key: K) -> Entry<'_, K, V, A>where
K: Ord,
pub fn entry(&mut self, key: K) -> Entry<'_, K, V, A>where
K: Ord,
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 · sourcepub fn split_off<Q>(&mut self, key: &Q) -> BTreeMap<K, V, A>
pub fn split_off<Q>(&mut self, key: &Q) -> BTreeMap<K, V, A>
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");
sourcepub fn extract_if<F>(&mut self, pred: F) -> ExtractIf<'_, K, V, F, A>
🔬This is a nightly-only experimental API. (btree_extract_if
)
pub fn extract_if<F>(&mut self, pred: F) -> ExtractIf<'_, K, V, F, A>
btree_extract_if
)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 · sourcepub fn iter(&self) -> Iter<'_, K, V>
pub fn iter(&self) -> Iter<'_, K, V>
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 · sourcepub fn iter_mut(&mut self) -> IterMut<'_, K, V>
pub fn iter_mut(&mut self) -> IterMut<'_, K, V>
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 · sourcepub fn keys(&self) -> Keys<'_, K, V>
pub fn keys(&self) -> Keys<'_, K, V>
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 · sourcepub fn values(&self) -> Values<'_, K, V>
pub fn values(&self) -> Values<'_, K, V>
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 · sourcepub fn values_mut(&mut self) -> ValuesMut<'_, K, V>
pub fn values_mut(&mut self) -> ValuesMut<'_, K, V>
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 · sourcepub fn len(&self) -> usize
pub fn len(&self) -> usize
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 · sourcepub fn is_empty(&self) -> bool
pub fn is_empty(&self) -> bool
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());
sourcepub fn lower_bound<Q>(&self, bound: Bound<&Q>) -> Cursor<'_, K, V>
🔬This is a nightly-only experimental API. (btree_cursors
)
pub fn lower_bound<Q>(&self, bound: Bound<&Q>) -> Cursor<'_, K, V>
btree_cursors
)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")));
sourcepub fn lower_bound_mut<Q>(&mut self, bound: Bound<&Q>) -> CursorMut<'_, K, V, A>
🔬This is a nightly-only experimental API. (btree_cursors
)
pub fn lower_bound_mut<Q>(&mut self, bound: Bound<&Q>) -> CursorMut<'_, K, V, A>
btree_cursors
)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")));
sourcepub fn upper_bound<Q>(&self, bound: Bound<&Q>) -> Cursor<'_, K, V>
🔬This is a nightly-only experimental API. (btree_cursors
)
pub fn upper_bound<Q>(&self, bound: Bound<&Q>) -> Cursor<'_, K, V>
btree_cursors
)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);
sourcepub fn upper_bound_mut<Q>(&mut self, bound: Bound<&Q>) -> CursorMut<'_, K, V, A>
🔬This is a nightly-only experimental API. (btree_cursors
)
pub fn upper_bound_mut<Q>(&mut self, bound: Bound<&Q>) -> CursorMut<'_, K, V, A>
btree_cursors
)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§
source§impl Clone for ReceiptEventContent
impl Clone for ReceiptEventContent
source§fn clone(&self) -> ReceiptEventContent
fn clone(&self) -> ReceiptEventContent
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for ReceiptEventContent
impl Debug for ReceiptEventContent
source§impl Deref for ReceiptEventContent
impl Deref for ReceiptEventContent
§type Target = BTreeMap<OwnedEventId, BTreeMap<ReceiptType, BTreeMap<OwnedUserId, Receipt>>>
type Target = BTreeMap<OwnedEventId, BTreeMap<ReceiptType, BTreeMap<OwnedUserId, Receipt>>>
source§impl DerefMut for ReceiptEventContent
impl DerefMut for ReceiptEventContent
source§impl<'de> Deserialize<'de> for ReceiptEventContent
impl<'de> Deserialize<'de> for ReceiptEventContent
source§fn deserialize<__D>(
__deserializer: __D,
) -> Result<ReceiptEventContent, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(
__deserializer: __D,
) -> Result<ReceiptEventContent, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
source§impl EventContent for ReceiptEventContent
impl EventContent for ReceiptEventContent
§type EventType = EphemeralRoomEventType
type EventType = EphemeralRoomEventType
source§fn event_type(&self) -> <ReceiptEventContent as EventContent>::EventType
fn event_type(&self) -> <ReceiptEventContent as EventContent>::EventType
m.room.message
.source§impl From<ReceiptEventContent> for AnyEphemeralRoomEventContent
impl From<ReceiptEventContent> for AnyEphemeralRoomEventContent
source§fn from(c: ReceiptEventContent) -> AnyEphemeralRoomEventContent
fn from(c: ReceiptEventContent) -> AnyEphemeralRoomEventContent
source§impl FromIterator<(OwnedEventId, BTreeMap<ReceiptType, BTreeMap<OwnedUserId, Receipt>>)> for ReceiptEventContent
impl FromIterator<(OwnedEventId, BTreeMap<ReceiptType, BTreeMap<OwnedUserId, Receipt>>)> for ReceiptEventContent
source§fn from_iter<T>(iter: T) -> ReceiptEventContentwhere
T: IntoIterator<Item = (OwnedEventId, BTreeMap<ReceiptType, BTreeMap<OwnedUserId, Receipt>>)>,
fn from_iter<T>(iter: T) -> ReceiptEventContentwhere
T: IntoIterator<Item = (OwnedEventId, BTreeMap<ReceiptType, BTreeMap<OwnedUserId, Receipt>>)>,
source§impl IntoIterator for ReceiptEventContent
impl IntoIterator for ReceiptEventContent
§type Item = (OwnedEventId, BTreeMap<ReceiptType, BTreeMap<OwnedUserId, Receipt>>)
type Item = (OwnedEventId, BTreeMap<ReceiptType, BTreeMap<OwnedUserId, Receipt>>)
§type IntoIter = IntoIter<OwnedEventId, BTreeMap<ReceiptType, BTreeMap<OwnedUserId, Receipt>>>
type IntoIter = IntoIter<OwnedEventId, BTreeMap<ReceiptType, BTreeMap<OwnedUserId, Receipt>>>
source§fn into_iter(self) -> <ReceiptEventContent as IntoIterator>::IntoIter
fn into_iter(self) -> <ReceiptEventContent as IntoIterator>::IntoIter
source§impl Serialize for ReceiptEventContent
impl Serialize for ReceiptEventContent
source§fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
impl EphemeralRoomEventContent for ReceiptEventContent
Auto Trait Implementations§
impl Freeze for ReceiptEventContent
impl RefUnwindSafe for ReceiptEventContent
impl Send for ReceiptEventContent
impl Sync for ReceiptEventContent
impl Unpin for ReceiptEventContent
impl UnwindSafe for ReceiptEventContent
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)§impl<T> CompatExt for T
impl<T> CompatExt for T
source§impl<T> EventContentFromType for Twhere
T: EventContent + DeserializeOwned,
impl<T> EventContentFromType for Twhere
T: EventContent + DeserializeOwned,
source§impl<T> FutureExt for T
impl<T> FutureExt for T
source§fn with_context(self, otel_cx: Context) -> WithContext<Self>
fn with_context(self, otel_cx: Context) -> WithContext<Self>
source§fn with_current_context(self) -> WithContext<Self>
fn with_current_context(self) -> WithContext<Self>
source§impl<T, UT> HandleAlloc<UT> for T
impl<T, UT> HandleAlloc<UT> for T
source§fn consume_handle(handle: Handle) -> Arc<T>
fn consume_handle(handle: Handle) -> Arc<T>
Arc<>
source§impl<T, W> HasTypeWitness<W> for Twhere
W: MakeTypeWitness<Arg = T>,
T: ?Sized,
impl<T, W> HasTypeWitness<W> for Twhere
W: MakeTypeWitness<Arg = T>,
T: ?Sized,
source§impl<T> Identity for Twhere
T: ?Sized,
impl<T> Identity for Twhere
T: ?Sized,
§impl<T> Instrument for T
impl<T> Instrument for T
§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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