From: Jari Williamsson <jari.williamsson@...>
Date: 2008-01-30T21:05:42+09:00
Subject: Re: For Loop question

Dick Davies wrote:
> question_array.each { |element|
>   next if element.nil
>   element.do_something
> }
> 
> will call do_something() on every element in the array that isn't nil.

Or a version that will break after the first non-nil:

question_array.each { |element|
    next if element.nil
    break element.do_something
}


> If you just want to do something with the first non-nil element, you could do
> 
> non_nil  = element.find { |e| !e.nil? }
> non_nil.do_something

To protect from arrays with all-nils:

non_nil  = element.find { |e| !e.nil? }
non_nil.do_something if non_nil


Best regards,

Jari Williamsson