Array1 + array2 newb question

ruby-talk
1

It's not so obviously,

a1.inject(){|s, x| s + a2.map {|y| [x, y]}}

cheers

Simon

···

-----Original Message-----
From: Mike Schramm [mailto:mike@mikeschramm.com]
Sent: Thursday, October 13, 2005 5:39 AM
To: ruby-talk ML
Subject: array1 + array2 newb question

Hey all,

I'm a ruby newbie, so this will be obvious, but I can't figure it out.

I'm trying to create a map grid from arrayed names of streets. I
want to go from [1,2,3] and [a,b,c] to [[1,a], [2,a], [3,a],
[1,b],... [3,c]].

so far the closest I have gotten is

a1.collect!{|x| [x, a2.collect!{|y| y}]}

which returns-- well you can try it if you like, but it's not
right.
Instead of just returning one value of a2 at a time, it returns the
whole thing every time. I'm guessing I need to somehow cycle
through
each element of a2 (ie a2[0], a2[1], a2[2]), but I can't
figure it out.

You guys will probably eat this up. What am I so obviously
doing wrong?

Mike