Topics. Allocators: What are They Good For?Writing Your First AllocatorThe Devil in the DetailsAllocator PitfallsStateSyntaxTestingCase Study. Containers and Allocators. STL containers allocate memorye.g. vector (contiguous), list (nodes)string is a container, for this talkAllocators provide a standard interface for container memory useIf you don\'t provide an allocator, one is provided for you.