74 lines
459 B
Rust
74 lines
459 B
Rust
// macros2.rs
|
|
// Make me compile! Scroll down for hints :)
|
|
|
|
fn main() {
|
|
my_macro!();
|
|
}
|
|
|
|
macro_rules! my_macro {
|
|
() => {
|
|
println!("Check out my macro!");
|
|
};
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// Macros don't quite play by the same rules as the rest of Rust, in terms of
|
|
// what's available where.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// Unlike other things in Rust, the order of "where you define a macro" versus
|
|
// "where you use it" actually matters.
|