From: dblack@...
Date: 2003-01-12T10:13:35+09:00
Subject: Re: a smart way...

Hi --

On Sun, 12 Jan 2003, daniel wrote:

> hello,
>
> I'm new and I'm searching for an smart way to extract
> the string 'daniel' from this line
> --
> <file name="daniel">
> --
>
> I can find this line via: line =~ /<file( +)name( *)=( *"(.+)")( *)>/
> But how to extrace this sting?

You can generate a MatchData object, and then address that object
with numerical indices.  Index 0 will be the whole match; index 1
will be the first () submatch, etc.

  str = '<file name="daniel">'
  m = /<file +name *= *"(.+)" *>/.match(str)
  puts "Whole match is: #{m[0]}"
  puts "First submatch is: #{m[1]}"

(You can also use the special variable $1 to get at the first
submatch.)


David

-- 
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav