Macro maplit::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);