On Fri, Mar 15, 2019 at 09:35:12PM +0000, eXodiquas via Digitalmars-d-learn
wrote:
[...]
> Vector opBinary(string op)(Vector rhs)
> {
> static if (op == "+") return Vector(this.x + rhs.x, this.y + rhs.y);
> else static if (op == "-") return Vector(this.x - rhs.x, this.y -
> rhs.y);
> }
>
> As you can see for the dot product the return type has to be a
> float/double and not a vector. Is there any way to achive this
> behaivour with D2? The opMul() function is not D2 style and I don't
> want to use it.
[...]
Use signature constraints to declare different overloads depending on
what the operator is. For example:
Vector opBinary(string op)(Vector rhs)
if (op == "+" || op == "=")
{
... /* implement + and - here */
}
double opBinary(string op)(Vector rhs)
if (op == "*")
{
... /* implement dot product here */
}
T
--
It is widely believed that reinventing the wheel is a waste of time; but I
disagree: without wheel reinventers, we would be still be stuck with wooden
horse-cart wheels.
