std::copyable_function 在标头<functional>定义 template<class...> classcopyable_function;// 未定义 (1)(C++26 起) template<classR,class...Args> classcopyable_function<R(Args...)>; template<classR,class...Args> classcopyable_function<R(Args...)noexcept>; ...
__cpp_lib_copyable_function std::copyable_function 202306L (C++26) P2548R6 __cpp_lib_coroutine 协程(库支持) 201902L (C++20) P0912R5LWG3393 __cpp_lib_debugging <debugging>:调试支持 202311L (C++26) P2546R5 可替换 std::is_debugger_present 202403L P2810R4 __cpp_lib_destroying_...
concept copyable = std::copy_constructible<T> && std::movable<T> && std::assignable_from<T&, T&> && std::assignable_from<T&, const T&> && std::assignable_from<T&, const T>; (since C++20) The concept copyable<T> specifies that T is a movable object type that can also be co...
Require std::span & std::basic_string_view to be TriviallyCopyable P2251R1 Yes Yes Yes Yes Clarifying the status of the “C headers” P2340R1 Yes Yes Yes Yes <expected> (FTM)* P0323R12P2549R1 12 16 19.33* 15.0.0* constexpr for <cmath> and <cstdlib> (FTM)* P0533R9 4.6 ...
Wenn die Objekte nichtTriviallyCopyable, ist das Verhalten undefiniert . Original: If the objects are notTriviallyCopyable, the behavior is undefined. The text has been machine-translated viaGoogle Translate. You can help to correct and verify the translation. Clickherefor instructions. ...
TriviallyCopyable (C++11) classe con banale copia, assegnazione e distruttore Original: class with trivial copy, assignment and destructor The text has been machine-translated viaGoogle Translate. You can help to correct and verify the translation. Clickherefor instructions. ...
Types that aren’t copyable (such asstd::ostream). Types where copying has ownership implications that we want to avoid (e.g.std::unique_ptr,std::shared_ptr). Types that have virtual functions or are likely to be inherited from (due to object slicing concerns, covered in lesson25.9 --...
std::is_trivially_copyable 是一元类型特征 (UnaryTypeTrait) 。 如果T 是可平凡复制 (TriviallyCopyable) 类型,那么提供的成员常量 value 等于true。对于其它任何类型,value 等于false。 如果std::remove_all_extents_t<T> 是不完整类型且并非(可有 cv 限定的)void ,那么行为未定义。 如果程序添加了 std...
TriviallyCopyable可平凡复制 (C++11) 这些类型的对象能够在复制底层字节后保持原值 (具名要求) TrivialType平凡类型 (C++11)(C++26 弃用) 这些类型的对象可以被平凡地构造和复制 (具名要求) StandardLayoutType标准布局类型 (C++11) 这些类型适用于与其他语言编写的代码交流 (具名要求) ImplicitLifetime...
scalar types trivially copyable class types arrays of such types cv-qualified versions of these types The following types are collectively called standard-layout types: scalar types standard-layout class types arrays of such types cv-qualified versions of these types (since C++11)[...