std::shared_ptr 是一种通过指针保持对象共享所有权的智能指针。多个 shared_ptr 对象可持有同一对象。下列情况之一出现时销毁对象并解分配其内存: 最后剩下的持有对象的 shared_ptr 被销毁; 最后剩下的持有对象的 shared_ptr 被通过 operator= 或reset() 赋值为另一指针。 用delete 表达式或在构造期间提供给 sha
C++ Memory management library std::shared_ptr Defined in header <memory> template< class T > class shared_ptr; (since C++11) std::shared_ptr is a smart pointer that retains shared ownership of an object through a pointer. Several shared_ptr objects may own the same object. The ...
shared_ptr(Y*ptr, Deleter d, Alloc alloc); (6) template<classDeleter,classAlloc> shared_ptr(std::nullptr_tptr, Deleter d, Alloc alloc); (7) template<classY> shared_ptr(constshared_ptr<Y>&r, element_type*ptr)noexcept; (8) template<classY> ...
std::experimental::shared_ptr From cppreference.com Defined in header<experimental/memory> template<classT>classshared_ptr; (library fundamentals TS) std::experimental::shared_ptris a modified version ofstd::shared_ptrthat adds support for arrays. ...
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std::hash<std::unique_ptr> (C++11) Hash-Unterstützung für std::unique_ptr (class Template-Spezialisierung) [edit] std::hash<std::shared_ptr> (C++11) Hash-Unterstützung für std::shared_ptr (class Template-Spezialisierung) [edit] std::hash<std::type_index> (C++11) Ha...
std::hash<std::unique_ptr> (C++11) hash support for std::unique_ptr (class template specialization) std::hash<std::shared_ptr> (C++11) hash support for std::shared_ptr (class template specialization) std::hash<std::indirect> (C++26) hash support for std::indirect (class templa...
shared_ptr // 创建方式1:使用 make_shared auto sp1 = std::make_shared<int>(42); // 创建方式2:直接构造 std::shared_ptr<int> sp2(new int(42)); // 复制和共享所有权 std::shared_ptr<int> sp3 = sp1; std::cout << sp1.use_count(); // 输出: 2 // 访问资源 std::cout << *sp...
[3] https://en.cppreference.com/w/cpp/memory/shared_ptr/get[4] https://en.cppreference.com/w/cpp/language/copy_elision[5] https://www.boost.org/doc/libs/1_76_0/libs/rational/[6] https://www.boost.org/doc/libs/1_76_0/libs/utility/operators.htm...
Die einzige dieser Art in der Standard-Bibliothek ist std::shared_ptr<T> . Original: There are non-member function template equivalents for all member functions of std::atomic. Those non-member functions may be additionally overloaded for types that are not specializations of std::atomic, but ...