opBinary : Static ifs or specialization?

[H. S. Teoh]

On Tue, Jun 23, 2020 at 11:53:36PM +0000, claptrap via Digitalmars-d-learn wrote:
> So you have opBinary and half a dozen operators to implement. Do you
> use a separate method for each operator or do you have one method and
> a big static if else if to select code path?
[...]

If your implementations are based on built-in operators, you could use
mixins to unify the implementations into one, e.g.:

	struct MyInt {
		int i;
		MyInt opBinary(string op)(MyInt arg) {
			return MyInt(mixin("i "~op~" arg.i"));
		}
	}

which has far less boilerplate than separately implementing each
operator.  This is one of the main reasons for the design of .opBinary.


T

-- 
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