rustlings/exercises/macros/macros4.rs
marisa 9bdb0a12e4 feat: Refactor hint system
Hints are now accessible using the CLI subcommand `rustlings hint
<exercise name`.

BREAKING CHANGE: This fundamentally changes the way people interact with exercises.
2019-11-11 16:51:38 +01:00

17 lines
302 B
Rust

// macros4.rs
// Make me compile! Execute `rustlings hint macros4` for hints :)
macro_rules! my_macro {
() => {
println!("Check out my macro!");
}
($val:expr) => {
println!("Look at this other macro: {}", $val);
}
}
fn main() {
my_macro!();
my_macro!(7777);
}