Why Ruby?

[Adam D. Ruppe]

Ary Borenszweig wrote:
> D should provide a yield keyword that basically
> rewrites the body of the method into the first code.

Don't need to change the language for that.

=========

string yield(string what) {
  return `if(auto result = dg(`~what~`)) return result;`;
}

class Foo
{
    uint array[2];

    int opApply(int delegate(ref uint) dg) {
         mixin(yield("array[0]"));
         mixin(yield("array[1]"));

	return 0;
    }
}
=========

Compiles and runs as expected, on today's D.