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Well, view could speed up code, but it also had some overhead, so creating lots of views came with a cost that would sometimes outweigh the benefit.

But, yeah, version info would be interesting.

Interesting! But would there really be no perf improvements before 1.5, e.g. with memcpy?

I commented on this, right next to your question: "Well, view could speed up code, but it also had some overhead, so creating lots of views came with a cost that would sometimes outweigh the benefit."

So yes, there was indeed perf improvements previously, they were simply not as lightweight as they are now.

This is julia 1.5.2