Range library for C++11/14/17. This code is the basis of a formal proposal to
add range support to the C++ standard library.

Range v3 is a library for the future C++. Not only does it work well with
today's C++ -- move semantics, lambdas, automatically deduced types and all --
it also anticipates tomorrow's C++ with Concepts.

WWW: https://github.com/ericniebler/range-v3