Where are allocators implemented? Explanation: Allocators are implemented in C++ standard library but it is used for C++ template library.

What is allocator implemented?

Allocators represent a special memory model and are an abstraction used to translate the need to use memory into a raw call for memory. They provide an interface to allocate, create, destroy, and deallocate objects. With allocators, containers and algorithms can be parameterized by the way the elements are stored.

What is the use of allocator?

Allocators are objects responsible for encapsulating memory management. std::allocator is used when you want to separate allocation and do construction in two steps. It is also used when separate destruction and deallocation is done in two steps.