What is the member variables list after the colon in a constructor good for?

Question

I\'m reading this C++ open source code and I came to a constructor but I don\'t get it ( basically because I don\'t know C++ :P )

I understand C and Java very well.

Answer 1

Yes, :: is the C++ scoping operator which lets you tell the compiler what the function belongs to. Using a : after the constructor declaration starts what is called an initialization list.