std::scoped_allocator_adaptor 的推导指引

定义于头文件 <scoped_allocator>
template<class OuterAlloc, class... InnerAllocs>

scoped_allocator_adaptor(OuterAlloc, InnerAllocs...)

  -> scoped_allocator_adaptor<OuterAlloc, InnerAllocs...>;
(C++17 起)

std::scoped_allocator_adaptor 提供推导指引使之能推导其外层分配器。

示例