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介绍 ConstexprCore/perfect_hash 库，可在 C++23 constexpr 编译期生成无冲突的完美哈希查找表，实现每秒十亿次查询的字符串映射性能。
The C++26 standard introduces several improvements to the std::format library, including direct pointer formatting, path formatting, constexpr support, and a new empty line overload for std::println.