Show HN: Cppmatch – Rust-Like Pattern Matching and Error Handling for C++ https://ift.tt/JGZakfK

Ads by Eonads

Show HN: Cppmatch – Rust-Like Pattern Matching and Error Handling for C++ I've created cppmatch, a lightweight, header-only C++ library that brings Rust-inspired pattern matching and error handling to C++. It tries to imitate the functionality of the questionmark (?) operator in C++ by using a macro that uses the gcc extension https://ift.tt/E2KnmDV This allows to create exceptionless code with non-intrusive error-as-value that unlike Exceptions, makes it clear which kinds of error a function can generate and forces you to handle (or ignore) them. The ? operator translates to *expect* To handle the errors I introduce *match* which allows to easily visit the contents of the result or any std::variant (you can use it to imitate rust enums) You can view an example of this project used in a "real way" in compiler-explorer: Simplified error types to just be a string: https://ift.tt/r9V6U7c Multiple structs as error types: https://ift.tt/d8aYSfC Feel free to give feedback or contribute to the project! https://ift.tt/5IscZbg March 16, 2025 at 10:37PM