Macro sugars::btset

macro_rules! btset {
    () => { ... };
    ( $($elem: expr),+ $(,)? ) => { ... };
}

Create a BTreeSet from a list of elements.

Example

use sugars::btset;

let set = btset! {"a", "b"};

assert!(set.contains("a"));
assert!(set.contains("b"));
assert!(!set.contains("c"));

let mut iter = set.iter();
assert_eq!(Some(&"a"), iter.next());
assert_eq!(Some(&"b"), iter.next());
assert_eq!(None, iter.next());