Hi... I'm a Python programmer and I'm trying Ruby now. I love Smalltalk and Ruby's "OO-ness" and likeness to Smalltalk gives me warm feelings. I'm really excited about Ruby, enough to consider switching to it from Python. However, I was messing around yesterday with Ruby and looked everywhere for some functionality close to the map() function on python, but couldn't find it anywhere. For those that don't know the function, here's a raw example: a = [1,2,3] b = [4,5,6] map(None, a, b) --> [[1,4],[2,5],[3,6]] The first parameter above can be any function taking 2 parameters and returning a tuple. A ruby equivalent would be something of the form: map(a,b) {|i,j| i,j} I thought about taking the arrays on the argument, generate iterators for each of them, and then calling the iterators, splicing the result into a resulting array, but could some *real* Ruby programmer post some solution here? :-) Best regards, Roberto "Wolfox" Amorim Software Developer - Brazil