From: Mike Fletcher <lemurific+rforum@...>
Date: 2006-12-02T04:09:37+09:00
Subject: Re: Simple iteration in a function problem

Blake Miller wrote:
> # this is the problem function.  all I want is the specific (ONE)
> element
> # from the @ys array that matches the id, but when you iterate over the
> # array, i can't find a way to only have one element returned
> def getXById(id)
>  @ys.each_with_index do |comp, index|
>    if( @ys[index].getUniqueId == id )
>      @ys.fetch(index)
>    end
>  end
> end

Perhaps

def getXById( id )
  @ys.detect { |y| y.getUniqueId == id }
end

See the docs for Enumerable#detect about handling what's returned if 
nothing is found.

-- 
Posted via http://www.ruby-forum.com/.