Re: [boost] [review][LEAF] Review of LEAF starts today : May 22 - May 31

Alexander Grund wrote:

Not sure if that really proves the point. I think you need to compare a result<X> function to a function returning X directly. Like so: https://godbolt.org/z/JFmn_j

And for that there is a difference: There are 4 main memory accesses in the result<X> function and none in the "regular" one.

That's not because of NRVO, it's because X fits in registers and result<X> doesn't.