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    Rustlings macros1: Writing your first macro

Rustlings macros1: Writing your first macro

Chris Biscardi
InstructorChris Biscardi

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Published 2 years ago
Updated a year ago

README for this exercise.

Chris Biscardi: [0:00] In macros1, we learn how to define our first macro. In this case, we use the macro_rules macro to define a macro with the name my_macro that returns a function that uses the println macro to print "Check out my macro."

[0:12] The Rust compiler tells us that we cannot find function my_macro in scope. This is because we're not calling a function here. We're calling a macro. Macros are called with an exclamation point.