Good day.
I know "inheritance" is a misleading word as there's no such thing when
it comes to structs, but I couldn't think of a better description for
this problem:
Let's say I got a struct for a location on a 2-dimensional plane:
struct Point {
int x;
int y;
}
Further I also need to represent a location in a 3-dimensional space:
struct Coordinate {
int x;
int y;
int z;
}
If these were classes instead I could simply make Coordinate inherit
from Point and only add "int z;". This would also make the thing I'm
trying to achieve much easier; Consider I have a method that does
something nifty with "x" and "y", I'd like this method to handle both
"Point" and "Coordinate", if they were classes it would be fairly simple:
int somethingNifty(Point p) {
return p.x + p.y;
}
So why not just use classes? I've understood it as there may be a
performance gain by using structs over classes, and in my program Point
and Coordinate are used heavily.
Obviously I'm fairly new to both D and structs, I have plenty Java and
some C++ experience (I've avoided using structs in C++) and I have "The
D Programming Language" book by Andrei which I'm happy to look up in,
although I've failed to find an answer to this question in the book, in
this newsgroup and on the net.
I would greatly appreciate if someone could give me a nudge the the
right direction.
