template Unroll(alias CODE, alias N) { static if (N == 1) enum Unroll = format(CODE, 0); else enum Unroll = Unroll!(CODE, N-1)~format(CODE, N-1); }
after that you can write stuff like mixin(Unroll!("v[%1$d]"~op~"=rhs.v[%1$d];", 3)); and it gets expanded to v[0]+=rhs.v[0];v[1]+=rhs.v[1];v[2]+=rhs.v[2];I find this method simpler than with foreach() and a tuple range, and also faster because it's identical to hand unrolling.