mapping-simple.rs

macro_rules! mapping {
  ( $($key:expr => $value:expr),* ) => {
    {
      let mut m = HashMap::new();

      $(
        m.insert($key, $value);
      )*

      m
    }
  };
}

fn main() {
  let me = mapping!("foo" => "bar", "bar" => "baz");
  println!("{:?}", me);
}