摘要： 根据STL的规范，以下是allocator的必要接口:allocator::value_typeallocator::pointerallocator::const_pointerallocator::referenceallocator::const_referenceallocator::size_typeallocator::difference_typeallocator::rebind一个嵌套的(nested)class template。class rebind<U>拥有唯一成员other，那是一个typedef,代表allocator<U>allocato 阅读全文