C++20 STL Features: One Year of Development on GitHub

on YouTube ↗01h 00m

" summary

Microsoft's STL implementation ships about 50 C++20 features added via GitHub in one year with integer comparison functions, atomic_ref, std::span and erase_if among them; 23 top-level features remain on the public roadmap. The repo uses CMake/Ninja, Azure CI, a wiki changelog and a GitHub project review flow; the span PR accumulates nearly 700 comments and the project merged 70+ PRs in a month. Most tests (≈99%) and many constexpr algorithms land and debug builds perform bounds checks while release builds avoid them.

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" chapters (9)

1. 0:00Introduction and overview
2. 3:39C++20 STL features overview
3. 18:18Integer comparison functions
4. 25:20Constexpr expansion in STL
5. 32:03Lookup tables with constexpr
6. 38:03Uniform container erasure
7. 45:11Atomic ref for multithreading
8. 52:03Span for contiguous ranges
9. 59:59Q&A and closing

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