From: dblack@...
Date: 2003-08-13T01:27:32+09:00
Subject: Re: Elegant solution for a loop-break problem

Hi --

On Wed, 13 Aug 2003, Austin Ziegler wrote:

> On Fri, 8 Aug 2003 00:00:15 +0900, KONTRA Gergely wrote:
> >>> Is there something similar to python's for .. else ... structure? (Do
> >>> something, ONLY when the loop is terminated normally (without break)
>
> > for element in array
> >   if element==value
> >     puts "#{element} found in array!"
> >     break
> >   end
> > else
> >   puts "#{element} not found in array"
> > end
>
> This could be done with:
>
> if array.find { |e| e == element }
>   puts "#{element} found in array!"
> else
>   puts "#{element} not found in array!"
> end
>
> Alternatively:
>
> if array.include?(element)
>   puts "#{element} found in array!"
> else
>   puts "#{element} not found in array!"
> end

Or even:

puts "#{element}#{" not" unless array.include?(element)} found in array!"

(sorry, couldn't resist :-)


David

-- 
David Alan Black
home: dblack@superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav