2cdd61294f
The `watch` command now requires user action to move to the next exercise. BREAKING CHANGE: this changes the behavior of `watch`.
80 lines
533 B
Rust
80 lines
533 B
Rust
// macros4.rs
|
|
// Make me compile! Scroll down for hints :)
|
|
|
|
// I AM NOT DONE
|
|
|
|
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);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// You only need to add a single character to make this compile.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// The way macros are written, it wants to see something between each
|
|
// "macro arm", so it can separate them.
|