cpp26

C++26 introduces changes to reduce undefined behavior, notably making it ill-formed to delete a pointer to an incomplete type, improving program safety.

Technical analysis of the interconversion between std::function and std::copyable_function in C++26, discussing implementation approaches and performance trade-offs, with specific note that libstdc++ currently uses a less optimal approach.

Explains the PImpl idiom in C++ and how the upcoming C++26 std::indirect type simplifies its implementation, reducing boilerplate and manual memory management.

The article criticizes the new std::simd library in C++26, arguing it is slower than scalar loops, compiles slowly, and is outperformed by auto-vectorizers and alternative libraries like Google Highway, questioning its value after a decade-long standardization process.