> IO sucks ass, std::string really sucks, containers like unordered_map are really slow (because of the pointer stability requirements), custom allocators are c

> IO sucks ass, std::string really sucks, containers like unordered_map are really slow (because of the pointer stability requirements), custom allocators are cumbersome, the regex library is a mess, why are string_view and span different things Nitpick: the STL (https://en.wikipedia.org/wiki/Standard_Template_Library#Containers https://en.wikipedia.org/wiki/Standard_Template_Library#Cont...) contains neither of these. > and make an unofficial “version 2” of the same standard library. Part of the C++ standard library in some sense _is_ version 2 of the STL.