C++23 — The Refinement II

Year: 2023 · Concepts: 89 (13 core + 76 STL)

C++23 builds on C++20's foundations, refining ranges and coroutines, adding important quality-of-life features, and bringing std::print for finally easy formatted output.

Sections

• Core Language (13 concepts) — Deducing this, if consteval, [[assume]], multidimensional subscript operator, explicit object parameters.
• STL & Library (76 concepts) — std::print, std::expected, std::flat_map, std::mdspan, std::generator, ranges improvements.

Key Features

• Deducing this — explicit object parameter for CRTP without CRTP
• std::print / std::println — std::println("Hello, {}!", name);
• std::expected<T, E> — monadic error handling without exceptions
• std::flat_map / std::flat_set — cache-friendly sorted containers
• std::mdspan — multidimensional span
• std::generator — standard coroutine generator
• if consteval — distinguish consteval from constexpr context
• [[assume(expr)]] — optimizer hints

Navigation

Section	Concepts	Link
Core Language	13	Browse →
STL & Library	76	Browse →