21 lines
545 B
Rust
21 lines
545 B
Rust
// macros3.rs
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// Make me compile, without taking the macro out of the module! Scroll down for hints :)
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#[macro_use]
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mod macros {
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macro_rules! my_macro {
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() => {
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println!("Check out my macro!");
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};
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}
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}
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fn main() {
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my_macro!();
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}
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// In order to use a macro outside of its module, you need to do something
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// special to the module to lift the macro out into its parent.
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// The same trick also works on "extern crate" statements for crates that have
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// exported macros, if you've seen any of those around.
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