Struct VacantEntry

pub struct VacantEntry<'a> { /* private fields */ }

A view into a vacant entry in a Map. It is part of the Entry enum.

Implementations

impl<'a> VacantEntry<'a>

pub fn key(&self) -> &String

Gets a reference to the key that would be used when inserting a value through the VacantEntry.

Examples

use tower_sesh::value::{map::Entry, Map};

let mut map = Map::new();

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

pub fn insert(self, value: Value) -> &'a mut Value

Sets the value of the entry with the VacantEntry’s key, and returns a mutable reference to it.

Examples

use tower_sesh::value::{map::Entry, Map, Value};

let mut map = Map::new();

match map.entry("sesh") {
    Entry::Vacant(vacant) => {
        vacant.insert(Value::from("hoho"));
    }
    Entry::Occupied(_) => unimplemented!(),
}

Trait Implementations

impl Debug for VacantEntry<'_>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.