Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
This is an older version of Boost and was released in 2013. The current version is 1.89.0.
wstring
// In header: <boost/container/string.hpp> typedef basic_string< wchar_t,std::char_traits< wchar_t >,std::allocator< wchar_t > > wstring;