template< class T > struct add_pointer; (C++11 起) 如果T 是可引用类型或(可有 cv 限定的) void,那么提供的成员 typedef type 是typename std::remove_reference<T>::type*。 否则,提供的成员 typedef type 是T。 如果程序添加了 std::add_pointer 的特化,那么行为未定义。 嵌套...
template<classT> structadd_pointer; (since C++11) IfTis areferenceable typeor (possibly cv-qualified)void, the member typedeftypeprovided istypenamestd::remove_reference<T>::type*. Otherwise, the member typedeftypeprovided isT. If the program adds specializations forstd::add_pointer, the behavior...
std::remove_pointer std::add_pointer std::remove_extent std::remove_all_extents std::aligned_storage std::aligned_union std::decay std::enable_if std::void_t std::conditional std::common_type std::common_reference std::underlying_type std::type_identity 注释 概念库 (C++20) 错误处理 动...
对于 template<typename T> struct std::add_pointer;如果 T 为 V& 或 V&&，则 type 为 V*…add...
std::add_pointer std::add_rvalue_reference std::add_volatile std::align std::aligned_alloc std::aligned_storage std::aligned_union std::alignment_of std::align_val_t std::allocate_shared std::allocator_arg std::allocator_arg_t std::any std::any::any std::any::emplace std::any::...
std::add_cv std::add_lvalue_reference std::add_pointer std::add_rvalue_reference std::add_volatile std::align std::aligned_alloc std::aligned_storage std::aligned_union std::alignment_of std::align_val_t std::allocate_shared std::allocator_arg std::allocator_arg_t std::any std::any...
std::add_const std::add_cv std::add_lvalue_reference std::add_pointer std::add_rvalue_reference std::add_volatile std::align std::aligned_alloc std::aligned_storage std::aligned_union std::alignment_of std::align_val_t std::allocate_shared std::allocator_arg std::allocator_arg_t std...
3.1 fetch_add //T is integralT fetch_add(T v, memory_order m = memory_order_seq_cst)volatilenoexcept; T fetch_add(T v, memory_order m=memory_order_seq_cst) noexcept;//T is pointerT fetch_add(ptrdiff_t v, memory_order m = memory_order_seq_cst)volatilenoexcept; ...
The language chains together the operator-> calls until the last one returns a pointer.”: https://stackoverflow.com/questions/8777845/overloading-member-access-operators Maybe it worth to add to this lesson: https://www.learncpp.com/cpp-tutorial/member-selection-with-pointers-and-references/ ...
template< class T > class shared_ptr; (C++11 起) 多个shared_ptr管理同一个指针,仅当最后一个shared_ptr析构时,指针才被delete。这是怎么实现的呢?答案是:引用计数(reference counting)。引用计数指的是,所有管理同一个裸指针(raw pointer)的shared_ptr,都共享一个引用计数器,每当一个shared_ptr被赋值(或...