The latest articles on DEV Community by Shigami Yune (@shigami_yune). https://dev.to/shigami_yune https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3463855%2Fc3f6fb44-60e5-43c5-a43c-4a598a1233ea.png https://dev.to/shigami_yune en Shigami Yune Sun, 07 Sep 2025 03:47:54 +0000 https://dev.to/shigami_yune/sycallbackhpp-16-byte-high-performance-safe-c-delegate-for-c-11-2b8 https://dev.to/shigami_yune/sycallbackhpp-16-byte-high-performance-safe-c-delegate-for-c-11-2b8 <p>Just finished a tiny but powerful C++ callback library: sy_callback.</p> <ul> <li>Footprint: Only 16 bytes (in 64 bit) (object pointer + thunk function pointer)</li> <li>Performance: Near 2x faster than std::function</li> <li>Safety: Works with non-trivial return types safely via RVO/move elision</li> <li>Flexible: Supports member functions, static functions, lambdas (capture/non-capture), functors, template function (auto cast)</li> <li>API: easy use, support target() like std::function</li> <li>No vtable needed: Lambda non-capture → no heap allocation, if is lambda capture or functors -&gt; heap allocation (size will be 16 + sizeof lambda capture or functors)</li> </ul> <p>It’s perfect for game engines, real-time systems, and performance-critical code where size and speed matter.</p> <p>Usage examples, documentation and bernmarks are all available on github<br> Here : <a href="https://github.com/ShigamiYune/sy_callback.hpp" rel="noopener noreferrer">https://github.com/ShigamiYune/sy_callback.hpp</a></p>