You don't just hope that it happens. Move semantics increase the usability of value-type semantics in C++ - you can now do more things with "values" without sho

You don't just hope that it happens. Move semantics increase the usability of value-type semantics in C++ - you can now do more things with "values" without shooting yourself in the foot (performance-wise) i.e. you can replace some previous uses of references, pointers etc. (note however that moves, while potentially cheap, are not free. There is still RVO.) It behove users to learn about move semantics before using them (or rather before assuming that they are implicitly using them.) The topic is unfortunately complicated.