Rust Macros
· 4 min read
What is a Rust Macro?
- Core Concept: Macros are a way of writing code that writes other code, a form of metaprogramming.
- Compile-Time Expansion: Unlike functions (which are called at runtime), macros are expanded during compilation. The Rust compiler replaces a macro invocation with the code generated by the macro before compiling the rest of the code.