Macro sugars::btmap

macro_rules! btmap {
    () => { ... };
    ( $($key: expr => $value: expr),+ $(,)? ) => { ... };
}

Create a BTreeMap from a list of key-value pairs.

Example

use sugars::btmap;

let map = btmap! {
    "a" => 1,
    "b" => 2,
};

assert_eq!(map["a"], 1);
assert_eq!(map["b"], 2);
assert_eq!(map.get("c"), None);