[ok_dad]

You’re also never increasing the size of those slices right? So it’s better memory wise by a bit and maybe faster? I last used Go a while ago, but I recall the capacity was the length of the underlying array?

Edit2: (I’m throttled and I can’t post a new comment I guess? Makes me feel like my voice was stolen! I guess I’m not wanted around HN.)

Thanks for the correction, I would delete my comment but I found a bug in HN while updating it so I’ll preserve my stupidity here in duplicate for now.

[costco]

There is no copying of memory going on, the a[i: i+4] or a[i: i+4: i+4] slice references the same underlying data as in a.