C++ “OR” operator

Question

can this be done somehow?

if((a || b) == 0) return 1;
return 0;

so its like...if a OR b equals zero, then...but it is not working for me.

Answer 1

If you have lot of that code, you may consider a helping method:

bool distanceLE (Point p1, Point p2, double threshold) {
    return (p1.distanceFrom (p2) <= threshold)
}

bool Circle2::contains (Line2 l) {
    return distanceLE (p1, l.p1, r) && distanceLE (p1, l.p2, r);
}

If you sometimes have <, sometimes <=, >, >= and so on, maybe you should pass the operator too, in form of a function.

In some cases your intentions by writing this:

if ((a || b) == 0) return 1;
return 0;

could be expressed with an bitwise-or:

if ((a | b) == 0) return 1;
return 0;

and simplified to

return  ! (a | b);

But read up on bitwise operations and test it carefully. I use them rarely and especially I didn't use C++ for some time.

Note, that you inverted the meaning between your examples 1 and 2, returning true and false in the opposite way.

And bitwise less-equal doesn't make any sense, of course. :)