Hello people. I have a pair type defined as :
struct pair { double x,y ; this () {} this (double x, double y) { this.x = x ; this.y = y ; } } Consider a function that operates on a pair: double abs2 ( pair a ) { return a.x * a.x + a.y * a.y ; } In C++ the function signature would be: double abs2 ( const pair & a ) So I thought const ref pair a would be appropriate in D -- is that right? How about the "in" qualifier? Does it only replace C++'s const in this case or does it also guarantee that the object will not be copied (&/ref) ? Also: does D not require member initializer lists like in C++? In C++ I would write the this(double,double) above as: pair(double x, double y):x(x),y(y){} -- since that language is supposed to guarantee that once we enter the { of the constructor, all sub-objects are initialized. Thanks! -- Shriramana Sharma ஶ்ரீரமணஶர்மா श्रीरमणशर्मा