From: nobu.nokada@...
Date: 2004-01-16T23:01:14+09:00
Subject: Re: Enumerable#find

Hi,

At Fri, 16 Jan 2004 22:50:38 +0900,
Hal Fulton wrote:
> >>Would it make sense to allow #find to take an argument or a block
> >>(but not both)?
> > 
> > 
> > It conflicts current spec, which takes the value when nothing
> > found.  You would need another name.
> 
> I don't understand. Do you mean this has changed in 1.8?
> 
> find traditionally has returned nil when it fails.

Sorry, it was wrong a little.  Enumerable#find calls the
optional parameter `ifnone' and returns its result, when no
object matches.  In 1.6 or former, nil returned regardless of
the result.

> Can you give me an example?

  $ ruby -e 'p [1,2,3].find(proc{puts "not found"; true}){|x|x.zero?}'
  not found
  true

-- 
Nobu Nakada