From: FireAphis <FireAphis@...>
Date: 2007-08-08T22:39:58+09:00
Subject: Iterating list in pairs

Hello,

I need to iterate through a list and handle two elements on every
iteration. That is I'd like to do something like

[1,2,3,4,5].each { |x, y| puts x.to_s + y.to_s }

12
23
34
45

This code doesn't work off course.
I can iterate using indices

0.upto(list.size-1) { |i| puts list[i] + list[i+1] }

But it looks ugly to me. Do you know any elegant tricks that don't use
list indices?

Thanks
FireAphis