Lets say I have a number of arrays, in this case three: [a,b,c][d,e][f,g,h,i] and I want all elements at the first index, then the second, and so on, as long as there are elements. Result should be this: [a,d,f,b,e,g,c,h,i]

What would I call this function? (Is it a merge?) Is there anything anywhere that does this already in #swift? #swiftlang 

 @f0851b88 What about something something `zip`? You know, like a … zipper?