macro_rules! rc_vec { () => { ... }; ($elem:expr; $n:expr) => { ... }; ($($t:tt)*) => { ... }; }
Like vec![], create a RcVec
vec![]
RcVec
let vec = rc_vec::rc_vec![1, 2, 3]; assert_eq!(vec, [1, 2, 3]);
let vec = rc_vec::rc_vec![3; 4]; assert_eq!(vec, [3, 3, 3, 3]);
let vec = rc_vec::rc_vec![]; assert_eq!(vec.len(), 0);