From: "Kroeger, Simon (ext)" <simon.kroeger.ext@...>
Date: 2005-10-11T21:38:10+09:00
Subject: Re: Sort pseudo-lists

 

> -----Original Message-----
> From: pete boardman [mailto:pete.boardman@pobox.com] 
> Sent: Tuesday, October 11, 2005 2:27 PM
> To: ruby-talk ML
> Subject: Re: Sort pseudo-lists
> 
> One more thing - I forgot that I need to get the result back to a  
> string... So (thanks to your help andn Ruby's 'eval') I can go from  
> this:
> 
> "{{3.1, 1.3, 2.5, 2.1}, {2.1, 3.1, 2.4, 2.2}, {1.4, 2.2, 2.1, 4.2}}"
> 
> to this:
> 
> [[1.4, 2.2, 2.1, 4.2], [2.1, 3.1, 2.4, 2.2], [3.1, 1.3, 2.5, 2.1]]
> 
> but I can't persuade the 'p' method to turn this back into a string:
> 
> "[[1.4, 2.2, 2.1, 4.2], [2.1, 3.1, 2.4, 2.2], [3.1, 1.3, 2.5, 2.1]]"
> 
> (and I should be able to go from here to :
> 
> "{{1.4, 2.2, 2.1, 4.2}, {2.1, 3.1, 2.4, 2.2}, {3.1, 1.3, 2.5, 2.1}}"
> 
> on my own :-)
> 
> 
> Pete

a = [[1.4, 2.2, 2.1, 4.2], [2.1, 3.1, 2.4, 2.2], [3.1, 1.3, 2.5, 2.1]]
puts '{{' + a.map{|b| b.join(', ')}.join('}, {') + '}}'

=>{{1.4, 2.2, 2.1, 4.2}, {2.1, 3.1, 2.4, 2.2}, {3.1, 1.3, 2.5, 2.1}}

cheers

Simon