Struct prefix_trie::map::VacantEntry

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

A mutable view into a missing entry. The information within this structure describes a path towards that missing node, and how to insert it.

Implementations

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

pub fn key(&self) -> &P

Gets a reference to the key in the entry.

impl<'a, P, T> VacantEntry<'a, P, T>where
    P: Prefix,

pub fn insert(self, default: T) -> &'a mut T

Get a mutable reference to the value. If the value is yet empty, set it to the given default value.

pub fn insert_with<F: FnOnce() -> T>(self, default: F) -> &'a mut T

Get a mutable reference to the value. If the value is yet empty, set it to the return value from the given function.

impl<'a, P, T> VacantEntry<'a, P, T>where
    P: Prefix,
    T: Default,

pub fn default(self) -> &'a mut T

Get a mutable reference to the value. If the value is yet empty, set it to the default value using Default::default().