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://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html 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…
Cppmatch – Rust-Like Pattern Matching and Error Handling for C++ launched on March 16, 2025 with 42 votes, #577 of 7,215 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
Cppmatch is a header-only C++ library that brings Rust-style pattern matching and error handling to C++. It enables developers to write exception-free code using error-as-value semantics, making error types explicit and forcing explicit handling. The library includes a macro-based operator similar to Rust's question mark operator and a match function for handling results and std::variant types, designed for developers seeking safer error handling patterns in C++.
written from the facts on this page · September 2026
From the sources
Contribute to Rucadi/cpp-match development by creating an account on GitHub.
A lightweight header-only Clang/GCC compatible C++ library for expressive pattern matching and error handling. Check an example in examples folder or go to compiler-explorer to play with it! A header-only C++ library that offers exceptionless error handling and type-safe enums, bringing Rust-inspired error propagation with the ? operator and the match operator to C++. The expect macro simplifies error propagation by automatically returning the error from a function when an error (Err) is encountered, and it continues with the success value (Ok) otherwise. This results in code that is both safe and easy to read without unnecessary verbosity. It allows to defer the error-checking to the point…from github.com
In the maker’s words, at launch
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…
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