From: come <come.news@...>
Date: 2007-06-04T16:35:25+09:00
Subject: Re: Ruby problem with conditional ranges

Hi,

Implicit match against "$_" is not anymore supported in version 1.8.
You cas still use it in command line form (with "-e" option).

In regular file, you have to write the match explicitly :

## one
## two
## three
## four
## five
File.open($0, 'r') { |f|
  while f.gets
    print $_.sub(/^##/, '') if ($_ =~ /^## two/) .. ($_ =~ /^## four/)
  end
}


On 4 juin, 08:56, "Todd A. Jacobs" <tjacobs-sndr-019...@codegnome.org>
wrote:
> I'm running into a problem doing a conditional range in ruby. The sample
> code is:
>
>     #!/usr/bin/ruby
>
>     ## one
>     ## two
>     ## three
>     ## four
>     ## five
>
>     File.open($0, 'r') { |f|
>         while f.gets
>             print $_.sub(/^##/, '') if /^## two/ .. /^## four/
>         end
>     }
>
> I'm expecting:
>
>     two
>     three
>     four
>
> but I get the whole file with the leading pound signs stripped off.
> What's wrong here?
>
> --
> "Oh, look: rocks!"
>         -- Doctor Who, "Destiny of the Daleks"