From: John Johnson <johnatl@...>
Date: 2006-04-27T04:46:00+09:00
Subject: Re: Stumped:  How do I iterate over regular expression matches?

You can use String#scan:

irb
irb(main):001:0> a="This is a test of this thing for this guy on the net."
=> "This is a test of this thing for this guy on the net."
irb(main):002:0> a.scan(/is/)
=> ["is", "is", "is", "is"]
irb(main):003:0> a.scan(/[^ ]is/)
=> ["his", "his", "his"]
irb(main):004:0> a.scan(/[^ ]+is/)
=> ["This", "this", "this"]
irb(main):005:0>

or:

a.scan(/[^ ]+is/) { |match| 
  puts "#{match} is a match of the regexp." 
}
This is a match of the regexp.
this is a match of the regexp.
this is a match of the regexp.

Regards,
  JJ



On Wednesday, April 26, 2006, at 02:21PM, Xeno Campanoli <xeno@eskimo.com> wrote:

>I looked for an iterator, and there may be something, but I don't recognize it.
>I also tried:
>while (x =~ /something/ )
>p $1
>
>end
>and it just printed out the same match over and over.  Perl does this very
>nicely, but google and pickaxe are not helping me do it in Ruby.  Sorry if this
>is obvious.
>
>xc
>
>
>


---
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