[___Calv_Dee___]

I completely agree, it's great to see that the language continues to move forward and advance in it's OO design. It's especially nice that these forward steps do not hinder or reduce Obj-C's low-level functionality, leaving available the performance gains from it's use.

[aaronblohowiak]

Exactly, gcd could have been objc but it is just a c extension!!