Trait LookupByKey 

pub trait LookupByKey<K, V> {
    // Required method
    fn get(&self, key: &K) -> Option<&V>;
}

A trait for looking up values by key that doesn’t need to implement Idx.

Required Methods

fn get(&self, key: &K) -> Option<&V>

Get the value for the given key.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<K, V> LookupByKey<K, V> for BTreeMap<K, V>

where K: Ord,

fn get(&self, key: &K) -> Option<&V>

Implementors