hans

zip = (arr1, arr2) ->
  basic_zip = (el1, el2) -> [el1, el2]
  zip_with basic_zip, arr1, arr2

# I wrote two implementations of `zipWith`: one is iterative, and one is recursive. Feel free to do some benchmarks if you feel like it :)

# zip_with, iterative style
zip_with = (func, arr1, arr2) ->
  min = Math.min arr1.length, arr2.length
  ret = []