cpp-development

To apply modern C++ patterns, compose types that manage their own resources so the compiler can generate special members automatically. This Rule of Zero approach, combined with RAII and const correctness, improves code safety and clarity during refactoring.

The Rule of Five in C++ requires defining or deleting all five special member functions when directly managing raw resources. Use it to ensure proper ownership semantics and prevent resource leaks, contrasting the Rule of Zero for composing resource-managing types.

C++20 concepts constrain template parameters by enforcing specific compile-time requirements on types. Using concepts instead of complex SFINAE patterns improves compiler error messages and overall template readability in modern C++ codebases.

A C++ pre-commit checklist for code safety should verify correct application of RAII, const correctness, and Rule of Zero or Five. It ensures proper ownership semantics and confirms common C++ design pitfalls are avoided before changes are committed.

You can use this approach to review C++17 codebases as well as C++20. The patterns enforced, including RAII, const correctness, and Rule of Zero, apply across both versions, while C++20 concepts are utilized specifically where template constraints are needed.

C++ templates often fail to compile without constraints because they accept types lacking required operations. Applying C++20 concepts constrains templates to enforce specific type requirements, replacing complex SFINAE and improving readability.