Macro sugar::hashmap

macro_rules! hashmap {
    ( @ single $ ( $ x : tt ) * ) => { ... };
    ( @ count $ ( $ rest : expr ) , *
) => { ... };
    ( $ ( $ key : expr => $ value : expr , ) + ) => { ... };
    (
$ ( $ key : expr => $ value : expr ) , * ) => { ... };
}

Create a HashMap from a list of key-value pairs

Example

#[macro_use] extern crate maplit;

let map = hashmap!{
    "a" => 1,
    "b" => 2,
};
assert_eq!(map["a"], 1);
assert_eq!(map["b"], 2);
assert_eq!(map.get("c"), None);