Struct nom::lib::std::collections::hash_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 HashMap
.
It is part of the Entry
enum.
Methods
impl<'a, K, V> VacantEntry<'a, K, V> where
K: 'a,
V: 'a,
[src]
impl<'a, K, V> VacantEntry<'a, K, V> where
K: 'a,
V: 'a,
ⓘImportant traits for &'a mut Rpub fn key(&self) -> &K
1.10.0[src]
ⓘImportant traits for &'a mut R
pub fn key(&self) -> &K
1.10.0
[src]Gets a reference to the key that would be used when inserting a value
through the VacantEntry
.
Examples
use std::collections::HashMap; let mut map: HashMap<&str, u32> = HashMap::new(); assert_eq!(map.entry("poneyland").key(), &"poneyland");
pub fn into_key(self) -> K
1.12.0[src]
pub fn into_key(self) -> K
1.12.0
[src]Take ownership of the key.
Examples
use std::collections::HashMap; use std::collections::hash_map::Entry; let mut map: HashMap<&str, u32> = HashMap::new(); if let Entry::Vacant(v) = map.entry("poneyland") { v.into_key(); }
ⓘImportant traits for &'a mut Rpub fn insert(self, value: V) -> &'a mut V
[src]
ⓘImportant traits for &'a mut R
pub fn insert(self, value: V) -> &'a mut V
Sets the value of the entry with the VacantEntry's key, and returns a mutable reference to it.
Examples
use std::collections::HashMap; use std::collections::hash_map::Entry; let mut map: HashMap<&str, u32> = HashMap::new(); if let Entry::Vacant(o) = map.entry("poneyland") { o.insert(37); } assert_eq!(map["poneyland"], 37);
Trait Implementations
impl<'a, K, V> Debug for VacantEntry<'a, K, V> where
K: 'a + Debug,
V: 'a,
1.12.0[src]
impl<'a, K, V> Debug for VacantEntry<'a, K, V> where
K: 'a + Debug,
V: 'a,
1.12.0
[src]Auto Trait Implementations
impl<'a, K, V> !Send for VacantEntry<'a, K, V>
impl<'a, K, V> !Send for VacantEntry<'a, K, V>
impl<'a, K, V> !Sync for VacantEntry<'a, K, V>
impl<'a, K, V> !Sync for VacantEntry<'a, K, V>