A small ternary conditional operation macro.

ternary.rs

#![allow(unused)]

macro_rules! tern {
    
    (true ? $yes:tt : $no:tt) => {
        $yes
    };
    
    (false ? $yes:tt : $no:tt) => {
        $no
    };
    
    ($cond:tt ? $yes:tt : $no:tt) => {
        if $cond { $yes } else { $no }
    };
    
}

fn main() {
    let val = tern!(true ? "Hi" : "Bye");
    println!("Value: {}", val);
}