On Saturday, 20 June 2015 at 01:50:11 UTC, Yuxuan Shui wrote:
auto ref R) is indeed a template function, so I don't understand.
But R is not a parameter on the function itself. It comes from the outside template.
Move it to the inside template, rewrite it as:
auto a(S, R)(auto ref R i) {
return cast(S)i*2;
}
and you should get further.
