[][src]Struct serde_json::map::OccupiedEntry

pub struct OccupiedEntry<'a> { /* fields omitted */ }

An occupied Entry. It is part of the Entry enum.

Methods

impl<'a> OccupiedEntry<'a>[src]

pub fn key(&self) -> &String[src]

Gets a reference to the key in the entry.

Examples

# use serde_json::json;
#
use serde_json::map::Entry;

let mut map = serde_json::Map::new();
map.insert("serde".to_owned(), json!(12));

match map.entry("serde") {
    Entry::Occupied(occupied) => {
        assert_eq!(occupied.key(), &"serde");
    }
    Entry::Vacant(_) => unimplemented!(),
}

pub fn get(&self) -> &Value[src]

Gets a reference to the value in the entry.

Examples

# use serde_json::json;
#
use serde_json::map::Entry;

let mut map = serde_json::Map::new();
map.insert("serde".to_owned(), json!(12));

match map.entry("serde") {
    Entry::Occupied(occupied) => {
        assert_eq!(occupied.get(), 12);
    }
    Entry::Vacant(_) => unimplemented!(),
}

pub fn get_mut(&mut self) -> &mut Value[src]

Gets a mutable reference to the value in the entry.

Examples

# use serde_json::json;
#
use serde_json::map::Entry;

let mut map = serde_json::Map::new();
map.insert("serde".to_owned(), json!([1, 2, 3]));

match map.entry("serde") {
    Entry::Occupied(mut occupied) => {
        occupied.get_mut().as_array_mut().unwrap().push(json!(4));
    }
    Entry::Vacant(_) => unimplemented!(),
}

assert_eq!(map["serde"].as_array().unwrap().len(), 4);

pub fn into_mut(self) -> &'a mut Value[src]

Converts the entry into a mutable reference to its value.

Examples

# use serde_json::json;
#
use serde_json::map::Entry;

let mut map = serde_json::Map::new();
map.insert("serde".to_owned(), json!([1, 2, 3]));

match map.entry("serde") {
    Entry::Occupied(mut occupied) => {
        occupied.into_mut().as_array_mut().unwrap().push(json!(4));
    }
    Entry::Vacant(_) => unimplemented!(),
}

assert_eq!(map["serde"].as_array().unwrap().len(), 4);

pub fn insert(&mut self, value: Value) -> Value[src]

Sets the value of the entry with the OccupiedEntry's key, and returns the entry's old value.

Examples

# use serde_json::json;
#
use serde_json::map::Entry;

let mut map = serde_json::Map::new();
map.insert("serde".to_owned(), json!(12));

match map.entry("serde") {
    Entry::Occupied(mut occupied) => {
        assert_eq!(occupied.insert(json!(13)), 12);
        assert_eq!(occupied.get(), 13);
    }
    Entry::Vacant(_) => unimplemented!(),
}

pub fn remove(self) -> Value[src]

Takes the value of the entry out of the map, and returns it.

Examples

# use serde_json::json;
#
use serde_json::map::Entry;

let mut map = serde_json::Map::new();
map.insert("serde".to_owned(), json!(12));

match map.entry("serde") {
    Entry::Occupied(occupied) => {
        assert_eq!(occupied.remove(), 12);
    }
    Entry::Vacant(_) => unimplemented!(),
}

Auto Trait Implementations

impl<'a> Send for OccupiedEntry<'a>

impl<'a> Unpin for OccupiedEntry<'a>

impl<'a> Sync for OccupiedEntry<'a>

impl<'a> !UnwindSafe for OccupiedEntry<'a>

impl<'a> RefUnwindSafe for OccupiedEntry<'a>

Blanket Implementations

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> From<T> for T[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> Any for T where
    T: 'static + ?Sized
[src]