Macro time 

macro_rules! time {
    ($h:literal:$m:literal:$s:literal) => { ... };
}

Construct a wall clock time from a HH:MM:SS literal.

Examples

let t = time!(15:30:45);
assert_eq!(t.hour(), 15);
assert_eq!(t.minute(), 30);
assert_eq!(t.second(), 45);