From: w_a_x_man <w_a_x_man@...>
Date: 2010-10-27T19:50:22+09:00
Subject: Re: Extraction of single subarrays from multidimensional array

On Oct 27, 5:14 am, Maurizio Cirilli <mauric...@gmail.com> wrote:
> OK, so  looks like there is no way with Ruby to extract
> single subarrays from md-arrays with unknown dimensions.
>
> Thanks all for help.
>
> -- Maurizio

If you don't know the length of ss when you write your program,
then obviously you don't know how many variables to use in your
assignment statement. You don't know whether to say

a,b,c = ss

or

a,b,c,d = ss

or

a,b,c,d,e = ss


However, those variables are not needed at all. To extract the
first subarray, say ss[0] or ss.first.  To extract the last
subarray, say ss[-1] or ss.last. To extract each in turn along
with its index:

ss.each_with_index{|x,i| p i, x}
0
["tcg", "agt", "tct", "agc", "tca", "tcc"]
1
["aaa", "aag"]
2
["ctg", "tta", "ctt", "cta", "ctc", "ttg"]

All of this will become obvious after you have some programming
experience.