hello, i have created a simple c++ format library to instead c sprintf or c++ string stream; it use .net format style and more efficient than c sprintf or the others. ------ this project is very simple to use, and you can integrate it to your project with a few minutes. i have created a default integration for C++ std::string std::wstring in this project, you can see it how to integrate it.  ---- in the Test directory, there is a visual C++ 2013 solution and xcode 5 project, codeblock project.you can open it and compile it directly and see how to use this library.  ---- you can find the unreal engine 3/4 integration of this libary in wiki page.  --- this libary is compiled by visual C++ 2013/xcode 5 darwin with c++ 11/ gcc 4.8 under windows and linux.  --- this libary is header file only like some libraries in boost, if you want to use it, you need include Format.hpp.