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std::pmr::null_memory_resource

STD：：PMR：：NULL[医]记忆[医]资源

Defined in header ​​
std::pmr::memory_resource* null_memory_resource(​(since C++17)

返回指向memory_resource执行任何分配。

返回值

返回指针p对象派生的类型的静态存储持续时间对象。std::pmr::memory_resource，具有下列属性：

  • 其allocate()函数总是抛出std::bad_alloc；

  • 其deallocate()功能不起作用；

  • 对任何memory_resourcer，，，p->is_equal(r)回报&r == p...

每次调用此函数时都会返回相同的值。

例外

noexcept规格：

noexcept

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http：//en.cppreference.com/w/cpp/Memory/NULL[医]记忆[医]资源

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