Why is allocator::rebind necessary when we have template template parameters?
A quoted text from Foundations of Algorithms in C++11, Volume 1, chap 4, p. 35 : template <typename T> struct allocator { template <typename U> using rebind = allocator<U>; }; sample usage : allocator<int>::rebind<char> x; In The C++ Programming Language, 4th edition, section 34.4.1, p. 998, commenting the ‘classical’ rebind member in default allocator class … Read more