From: Peter Szinek <peter@...>
Date: 2006-10-04T22:19:21+09:00
Subject: Equvialent of Python slices?

Hello,

Sorry for the lame question again, but even after a lot of googling I 
still couldn't find the $subj., ie. something like:

 >>> "asdfghj"[2::2]
'dgj'
(= every second letter, beginning from the 2nd index in the string)
 >>> "asdfghj"[::-1]
'jhgfdsa'
(= the whole word, 1 steps backwards  - i.e. the reverse of the string)

ranges in Ruby are similar, without the 3rd 'step' param, which I am 
missing frequently... Also, with slices, you can omit one or both 
delimiters (i.e. if you omit the first (last) one, it defaults to the 
0th (last) index of the list - is there some simiar possibility in Ruby, 
too?



Thx
Peter
http://www.rubyrailways.com