James' solution to the previous question being so much better than mine (which I
did for my learning purposes), I dare asking about how to iterate over two
arrays in parallel. I don't see a way to use the iteration methods, and my
solution below doesn't feel idiomatic at all:

array1 = [1, 2, 3]
array2 = ["one", "two", "three"]
# note: both arrays are known to be the same size

(0..array1.size-1).each {
  | i |
  print "#{array2[i]} = #{array1[i]}\n"
}