As a rule of thumb, they're all worth using. C++11, to repeat something that's becoming a cliché, is like a whole new language. Even in the context of Qt, it's

As a rule of thumb, they're all worth using. C++11, to repeat something that's becoming a cliché, is like a whole new language. Even in the context of Qt, it's worth using some C++11. auto, lambda functions, shared and unique pointers, (although QT has always provided its own versions of these), C++ 11 threads. I code heavily with Qt and I use these C++11 features daily. C++11 changes some things that used to be almost impossible into possible, and some things that used to be awkward maintenance headaches into natural and flowing code. This is great; this is an opportunity for you to get to grips with some modern C++.