use std::io::stdin; use std::io::BufRead; use std::io::BufReader; ($foo:expr)=>{ fn $foo(){println!("123");} }; } fn main() { foo(); }
Standard input is empty
error: expected identifier, found `foo` --> prog.rs:7:16 | 7 | fn $foo(){println!("123");} | ^^^^ error: aborting due to previous error
Standard output is empty