Trait containers_rs::Map

pub trait Map<'a, K, V, E = (K, V), R = &'a V, Rm = &'a mut V>: Container<E> where
    Self: 'a,
    K: Eq,
    V: 'a,
    R: Deref<Target = V>,
    Rm: DerefMut<Target = V>, {
    fn get<Q: ?Sized>(&'a self, key: &Q) -> Option<R>
    where
        K: Borrow<Q>,
        Q: Eq;
    fn get_mut<Q: ?Sized>(&'a mut self, k: &Q) -> Option<Rm>
    where
        K: Borrow<Q>,
        Q: Eq;
    fn insert(&mut self, k: K, v: V) -> Option<V>;
}

Trait for a container indexed by a value that implements Eq.

Required methods

fn get<Q: ?Sized>(&'a self, key: &Q) -> Option<R> where
    K: Borrow<Q>,
    Q: Eq, 

Get a value from this Map. Takes a key by reference and returns a reference to the corresponding data, or None if none exists.

fn get_mut<Q: ?Sized>(&'a mut self, k: &Q) -> Option<Rm> where
    K: Borrow<Q>,
    Q: Eq, 

Returns a mutable reference to an object stored in this container based on the key given, or None if the key does not exist.

fn insert(&mut self, k: K, v: V) -> Option<V>

Adds a new item into this container with the associated key, and returns the previous value associated with that key, if it existed.

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Implementors

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