Crystal Macros: Compile-Time Code Generation Powerhouse
2025-01-14
Crystal 1.15.0's macro system enables compile-time code execution, significantly extending the language's capabilities. The `Crystal::Macros` module offers a rich set of functions, including `read_file` for reading file contents, `run` for executing external programs, `env` for getting environment variables, and even version comparison and type parsing. These features empower developers to perform complex preprocessing tasks at compile time, such as dynamically generating code based on platform or environment, improving development efficiency and code maintainability. This is a powerful tool for building highly customized applications and libraries.
Development
Macros