Macro hashset

macro_rules! hashset {
    () => { ... };
    ( $($x:expr),* ) => { ... };
    ( $($x:expr ,)* ) => { ... };
}

Construct a set from a sequence of values.

Examples

assert_eq!(
  hashset![1, 2, 3],
  HashSet::from(vec![1, 2, 3])
);