[1]: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3949.pdf | [1]: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3949.pdf | ||||
[2]: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0052r6.pdf | |||||
[2]: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0052r8.pdf |