std::allocator_arg_t
Defined in header <memory> | ? | ? |
|---|---|---|
struct allocator_arg_t {}; | ? | (since C++11) (until C++17) |
struct allocator_arg_t { explicit allocator_arg_t() = default; }; | ? | (since C++17) |
std::allocator_arg_t是一种空类类型，用于消除对分配器对象的构造函数和成员函数的重载的歧义，包括std::tuple，，，std::function，，，std::promise，和std::packaged_task...
另见
allocator_arg (C++11) | an object of type std::allocator_arg_t used to select allocator-aware constructors (constant) |
|---|---|
uses_allocator (C++11) | checks if the specified type supports uses-allocator construction (class template) |
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