From: Lloyd Zusman <ljz@...>
Date: 2006-05-07T11:17:30+09:00
Subject: Re: Problem with block

Andy <ihapaantuh@hotmail.com> writes:

> Why does the following method return nil?
>
> def foo
>   info = "           What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                        Status|RESOLVED                    |CLOSED
>          "
>    result = Hash.new
>    info.each do |line|
>      if line.scan(/\|/)
>        field, oldVal, newVal = line.chomp.split(/\s*\|\s*/)
>        if (field == 'Status')
>          result['status'] = newVal
>        end
>      end
>    end
>    result
> end

You are not invoking the function "foo", just defining it.  Therefore,
none of the code within "foo" gets executed.  If you invoke foo after
the final "end" statement, you will see a non-nil result.


> Also, for some reason the statement "if (field == 'Status')" doesn't 
> return true.

The regular expression passed to the line.chomp.split method does not
cause the leading spaces to get stripped out of the string stored in
"field" ... just any trailing spaces that might exist (of which there
are none).  Therefore, you should do this:

  if (field.strip == 'Status')

... or something similar.


> Thanks,
>
> Andy.
>
> -- 
> Posted via http://www.ruby-forum.com/.

-- 
 Lloyd Zusman
 ljz@asfast.com
 God bless you.