std::swap 可以对程序定义类型在命名空间 std 中特化,但 ADL 不会寻找这些特化(命名空间 std 不是与程序定义类型关联的空间)。 (C++20 前)令程序定义类型可交换的期待方式是在与该类型相同的命名空间中提供非成员函数 swap :细节见可交换 (Swappable) 。
_Thr=_STD exchange(_Other._Thr, {});return*this; } thread(constthread&) =delete;//thread对象不能被复制thread&operator=(constthread&) =delete;//thread对象不能被拷贝赋值voidswap(thread& _Other) noexcept {//swap with _Other_STD swap(_Thr, _Other._Thr); } _NODISCARDbooljoinable()const...
}~_Promise() noexcept {//destroy}void_Swap(_Promise& _Other) {//exchange with _Other_State._Swap(_Other._State); _STD swap(_Future_retrieved, _Other._Future_retrieved); }const_State_manager<_Ty>& _Get_state()const{//return reference to associated asynchronous state objectreturn_State; ...
This is an overload of the generic algorithmswapthat improves its performance by mutually transferring ownership over their assets to the other container (i.e., the containers exchange references to their data, without actually performing any element copy or movement): It behaves as ifx.swap(y)...
swap swaps the values of two objects (function template) atomic_exchangeatomic_exchange_explicit (C++11)(C++11) atomically replaces the value of the atomic object with non-atomic argument and returns the old value of the atomic (function template)...
other - container to exchange the contents with Return value(none) ExceptionsAny exception thrown by the swap of the Compare objects. (until C++17) noexcept specification: noexcept(std::allocator_traits<Allocator>::is_always_equal::value && std::is_nothrow_swappable<Compare>::value) (since ...
swap Exchange values of two objects (function template ) swap_ranges Exchange values of two ranges (function template ) iter_swap Exchange values of objects pointed to by two iterators (function template ) ...
在C++中，`std::atomic::compare_exchange`函数的选择主要基于业务需求和数据对象的特性。选择`strong`版本的比较与交换操作，通常意味着在比较不匹配时不需要循环，这是更优的选择，除非数据类型`T`的表示可能包含填充位、陷阱位或提供相同值的不同对象表示（如浮点数的NaN）。在这些情况下，弱比较与...
非成员函数std::swap(std::basic_string)其时间复杂度都是常数。原理也很简单，就是交换std::string里...
std::swap(std::shared_ptr) (C++11) 特化std::swap算法 (函数模板) std::atomic_is_lock_free(std::shared_ptr)std::atomic_load(std::shared_ptr)std::atomic_load_explicit(std::shared_ptr)std::atomic_store(std::shared_ptr)std::atomic_store_explicit(std::shared_ptr)std::atomic_exchange(st...