Advanced Design Guide

This directory contains three design guides for the OnceCallback component, aimed at readers who already have C++ template experience. If concepts such as move semantics, template partial specialization, or type erasure are still unfamiliar territory, we recommend reading the prerequisite articles in the full/ directory first.

STARTFINISHDesign Guide (I): motivation and API design→STARTFINISHDesign Guide (II): step-by-step implementation→STARTFINISHDesign Guide (III): test strategy and performance comparison→