From: Florian Frank <flori@...>
Date: 2003-07-12T04:10:21+09:00
Subject: Re: cross-corr time/array lag problem

On 2003-07-12 01:35:39 +0900, Qubert wrote:
> Why is b not being set with a lag? I can not .collect because I need
> to manupilate the index not the contents of the array.

You could do this:

b = [] 
a.each_index do |j| b << a[j - 1] end

b would be right rotated by 1, because your first index -1 into a is the
last element of a.

b # => [5, 0, 1, 2, 3, 4]

If you just want to skip the first element of a in b that would be a
pretty short solution:

b = a[1, a.size]

-- 
To teach how to live with uncertainty, yet without being paralyzed by
hesitation, is perhaps the chief thing that philosophy can do.
  -- Bertand Russell