With programming languages you can both screw and hammer. I'ts not like you need to know C++ to do GUI's and D to make CLI's, or the other way around. What's th

With programming languages you can both screw and hammer. I'ts not like you need to know C++ to do GUI's and D to make CLI's, or the other way around. What's the best tool for the job when all tools does basically the same thing ? I would say the tool you are best at.