C++ 具名要求：可复制赋值 (CopyAssignable) - cppreference.com 随机数 SeedSequence(C++11) RandomNumberEngine(C++11) RandomNumberDistribution(C++11) UniformRandomBitGenerator(C++11) RandomNumberEngineAdaptor(C++11) 并发 BasicLockable(C++11) Lockable(C++11) TimedLockable(C++11) SharedLockable(C++14) SharedTimedLockable(C++14) Mutex(C++11) TimedMutex(C++11) SharedMutex(C++17) SharedTimedMutex(C++14) 范围 RangeAdaptorObject(C++20) RangeAdaptorClosureObject(C++20) 多维视图 LayoutMapping(C++23) LayoutMappingPolicy(C++23) AccessorPolicy(C++23) 其他 CharTraits RegexTraits(C++11) BitmaskType LiteralType(C++11) NumericType UnaryTypeTrait(C++11) BinaryTypeTrait(C++11) TransformationTrait(C++11) Clock(C++11) TrivialClock(C++11)