From: Avdi Grimm <avdi@...>
Date: 2007-03-22T00:48:33+09:00
Subject: Re: nil? with block

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On 3/21/07, Michiel de Mare <merloen@gmail.com> wrote:
>
> user.personal_data.address.nil?{ raise 'no address!'}.zipcode
>
>
Instead of interrupting the main flow of code with error handling, how about
this:

begin
  zipcode = user.personal_data.address.zipcode
rescue NoMethodError => error
  case error
  when :personal_data then raise "No user!"
  when :address then raise "No personal data!"
  when :zipcode then raise "No address!"
end

In fact, thanks for spurring me to think of that technique, I think I'm
going to use it in future!

-- 
Avdi

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