Struct VacantEntry

pub struct VacantEntry<'a, T> { /* private fields */ }

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

Implementations

impl<'a, T> VacantEntry<'a, T>

where T: Ord,

pub fn index(&self) -> usize

Gets the index where the value would be inserted.

Examples

use vecset::VecSet;

let mut set = VecSet::new();
set.insert("a");
set.insert("c");

match set.entry("b") {
    vecset::set::Entry::Vacant(e) => {
        assert_eq!(e.index(), 1);
    }
    vecset::set::Entry::Occupied(_) => unreachable!(),
}

pub fn into_value(self) -> T

Take ownership of the value.

Examples

use vecset::VecSet;

let mut set = VecSet::new();

match set.entry("a") {
    vecset::set::Entry::Vacant(e) => {
        assert_eq!(e.into_value(), "a");
    }
    vecset::set::Entry::Occupied(_) => unreachable!(),
}

pub fn insert(self)

Sets the value of the entry and returns a reference to it.

Examples

use vecset::VecSet;

let mut set = VecSet::new();

match set.entry("a") {
    vecset::set::Entry::Vacant(e) => {
        e.insert();
    }
    vecset::set::Entry::Occupied(_) => unreachable!(),
}

assert!(set.contains(&"a"));

pub fn insert_entry(self) -> OccupiedEntry<'a, T>

Sets the value of the entry and returns an OccupiedEntry.

Examples

use vecset::VecSet;

let mut set = VecSet::new();

match set.entry("a") {
    vecset::set::Entry::Vacant(e) => {
        let occupied = e.insert_entry();
        assert_eq!(occupied.get(), &"a");
    }
    vecset::set::Entry::Occupied(_) => unreachable!(),
}