#[non_exhaustive]pub struct PollResultsContentBlock(/* private fields */);
Expand description
A block for the results of a poll.
This is a map of answer ID to number of votes.
Implementations§
Methods from Deref<Target = BTreeMap<String, UInt>>§
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 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")));
1.0.0 · 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);
1.17.0 · 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());
1.0.0 · 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 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"]);
1.0.0 · 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 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);
Trait Implementations§
source§impl Clone for PollResultsContentBlock
impl Clone for PollResultsContentBlock
source§fn clone(&self) -> PollResultsContentBlock
fn clone(&self) -> PollResultsContentBlock
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for PollResultsContentBlock
impl Debug for PollResultsContentBlock
source§impl Default for PollResultsContentBlock
impl Default for PollResultsContentBlock
source§fn default() -> PollResultsContentBlock
fn default() -> PollResultsContentBlock
source§impl Deref for PollResultsContentBlock
impl Deref for PollResultsContentBlock
source§impl<'de> Deserialize<'de> for PollResultsContentBlock
impl<'de> Deserialize<'de> for PollResultsContentBlock
source§fn deserialize<__D>(
__deserializer: __D,
) -> Result<PollResultsContentBlock, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(
__deserializer: __D,
) -> Result<PollResultsContentBlock, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
source§impl FromIterator<(String, UInt)> for PollResultsContentBlock
impl FromIterator<(String, UInt)> for PollResultsContentBlock
source§fn from_iter<T>(iter: T) -> PollResultsContentBlock
fn from_iter<T>(iter: T) -> PollResultsContentBlock
source§impl Serialize for PollResultsContentBlock
impl Serialize for PollResultsContentBlock
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,
Auto Trait Implementations§
impl Freeze for PollResultsContentBlock
impl RefUnwindSafe for PollResultsContentBlock
impl Send for PollResultsContentBlock
impl Sync for PollResultsContentBlock
impl Unpin for PollResultsContentBlock
impl UnwindSafe for PollResultsContentBlock
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
)