Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.ruby > #2432

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

Show all headers | View raw

On Thu, Apr 7, 2011 at 1:58 AM, 7stud -- <bbxx789_05ss@yahoo.com> wrote:
> You can also get the relative offset like this:
>
> str = "_foo_ _bar_"
>
> str.scan(/_(\w+)_/) do |curr_match|
>  md = Regexp.last_match
>  whole_match = md[0]
>  captures = md.captures
>  captures.each do |capture|
>    p [whole_match, capture, whole_match.index(capture)]
> end

That's nice!  I wasn't aware of this.  Thanks for sharing!

I also just read this in the docs:

"Note that the last_match is local to the thread and method scope of the method
that did the pattern match."

So forget my point about $~ being safer.

Kind regards

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

Back to comp.lang.ruby | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

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

csiph-web