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Groups > comp.lang.ruby > #2362

Re: Match a pattern multiple times, returning matches, captures and offset?

From Brian Candler <b.candler@pobox.com>
Newsgroups comp.lang.ruby
Subject Re: Match a pattern multiple times, returning matches, captures and offset?
Date 2011-04-05 13:07 -0500
Organization Service de news de lacave.net
Message-ID <61d24bb96a28e517e89adef15f444b29@ruby-forum.com> (permalink)
References <4D9B4FBD.9020602@fischer.name>

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String#scan with a block may do what you want:

>> "_foo_ _bar_".scan(/_(\w+)_/) { |x| puts "Offset #{$`.size}, captures 
#{x.inspect}" }
Offset 0, captures ["foo"]
Offset 6, captures ["bar"]
=> "_foo_ _bar_"

But it doesn't give you offsets to the individual captures, just to the 
start of the whole match. (You also get the full match in $& and the 
rest of the string after the match in $')

-- 
Posted via http://www.ruby-forum.com/.

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Thread

Match a pattern multiple times, returning matches, captures and offset? Markus Fischer <markus@fischer.name> - 2011-04-05 12:22 -0500
  Re: Match a pattern multiple times, returning matches, captures and offset? Brian Candler <b.candler@pobox.com> - 2011-04-05 13:07 -0500
  Re: Match a pattern multiple times, returning matches, captures and offset? 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-05 20:37 -0500
    Re: Match a pattern multiple times, returning matches, captures and offset? Robert Klemme <shortcutter@googlemail.com> - 2011-04-06 04:42 -0500
  Re: Match a pattern multiple times, returning matches, captures and offset? 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-06 18:58 -0500
    Re: Match a pattern multiple times, returning matches, captures and offset? Robert Klemme <shortcutter@googlemail.com> - 2011-04-07 02:13 -0500
    Re: Match a pattern multiple times, returning matches, captures and offset? Brian Candler <b.candler@pobox.com> - 2011-04-07 03:39 -0500
      Re: Match a pattern multiple times, returning matches, captures and offset? 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-07 14:04 -0500
        Re: Match a pattern multiple times, returning matches, captures and offset? Brian Candler <b.candler@pobox.com> - 2011-04-08 02:19 -0500
          Re: Match a pattern multiple times, returning matches, captures and offset? 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-08 14:53 -0500

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