Struct std::collections::btree_map::VacantEntry 1.0.0[−][src]
pub struct VacantEntry<'a, K, V> where
K: 'a,
V: 'a, { /* fields omitted */ }
A view into a vacant entry in a BTreeMap
.
It is part of the Entry
enum.
Implementations
impl<'a, K, V> VacantEntry<'a, K, V> where
K: Ord,
[src]
impl<'a, K, V> VacantEntry<'a, K, V> where
K: Ord,
[src]pub fn key(&self) -> &KⓘNotable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W
1.10.0[src]
Notable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W
Gets a reference to the key that would be used when inserting a value through the VacantEntry.
Examples
use std::collections::BTreeMap; let mut map: BTreeMap<&str, usize> = BTreeMap::new(); assert_eq!(map.entry("poneyland").key(), &"poneyland");Run
pub fn into_key(self) -> K
1.12.0[src]
Take ownership of the key.
Examples
use std::collections::BTreeMap; use std::collections::btree_map::Entry; let mut map: BTreeMap<&str, usize> = BTreeMap::new(); if let Entry::Vacant(v) = map.entry("poneyland") { v.into_key(); }Run
pub fn insert(self, value: V) -> &'a mut VⓘNotable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W
[src]
Notable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W
Sets the value of the entry with the VacantEntry
’s key,
and returns a mutable reference to it.
Examples
use std::collections::BTreeMap; use std::collections::btree_map::Entry; let mut map: BTreeMap<&str, u32> = BTreeMap::new(); if let Entry::Vacant(o) = map.entry("poneyland") { o.insert(37); } assert_eq!(map["poneyland"], 37);Run
Trait Implementations
Auto Trait Implementations
impl<'a, K, V> RefUnwindSafe for VacantEntry<'a, K, V> where
K: RefUnwindSafe,
V: RefUnwindSafe,
K: RefUnwindSafe,
V: RefUnwindSafe,
impl<'a, K, V> Send for VacantEntry<'a, K, V> where
K: Send,
V: Send,
K: Send,
V: Send,
impl<'a, K, V> Sync for VacantEntry<'a, K, V> where
K: Sync,
V: Sync,
K: Sync,
V: Sync,
impl<'a, K, V> Unpin for VacantEntry<'a, K, V> where
K: Unpin,
K: Unpin,
impl<'a, K, V> !UnwindSafe for VacantEntry<'a, K, V>
Blanket Implementations
impl<T> Borrow<T> for T where
T: ?Sized,
[src]
impl<T> Borrow<T> for T where
T: ?Sized,
[src]pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W
[src]
Notable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W
[src]
Notable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W