Pitch: Method to sum numeric arrays

[orobio (Manolo van Ee)]

@mattrips

Is the overhead of the Iterator causing the difference that I'm seeing?

Could it be that you benchmarked a debug build? In that case that's probably the explanation. See also the following topic:

Performance of array access vs iterator

I'm currently in the early stages of writing an iOS game in Swift, and last night noticed that it was occasionally dropping frames. A bunch of profiling later and it turned out what was taking a massive proportion of the frame time was code that iterated over an array and looked like this... for y in 0..<height { for x in 0..<width { someArray[x + y * width].someProperty = false } } The code originally used x and y for other stuff, but this is no longer necessary. Hurray, I tho…