Hacker News Reader

Re: metamap being zero cost

I thought there were no zero cost abstractions in C++?

Still, it isn’t RoR or anything JS so it has that going for it.

Yes zero cost is subjective. It has a cost at least at compile time. But you can see metamap is a like loop unrolling for objects (if you think loop unrolling is zero cost then metamap too).

Reply on news.ycombinator.com