From: "Eregon (Benoit Daloze)" <redmine@...>
Date: 2012-07-29T23:52:34+09:00
Subject: [ruby-core:46861] [ruby-trunk - Feature #6802] String#scan should have equivalent yielding MatchData


Issue #6802 has been updated by Eregon (Benoit Daloze).


prijutme4ty (Ilya Vorontsov) wrote:
> Though I suggest that using a special method here is more clear.
> So what'd you say about String#each_match and Regexp#each_match

I did indeed somewhat expected String#scan to yield a MatchData object, instead of $~.captures.
I'm in favor of String#each_match, it might be a nice addition and the name is clear, but the naming is different from the usual regexp methods on String, and it might not be worth to add a method (I agree $~ is not the prettiest thing around).

I think Regexp#each_match does not convey well what it does though.
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Feature #6802: String#scan should have equivalent yielding MatchData
https://bugs.ruby-lang.org/issues/6802#change-28536

Author: prijutme4ty (Ilya Vorontsov)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 


Ruby should have method to obtain not an array of arrays but of MatchData objects. It can help in obtaining named groups:

pattern = /x: (?<x>\d+) y:(?<y>\d+)/
polygon = []
text.scan_for_pattern(pattern){|m| polygon << Point.new(m[:x], m[:y]) }

Not to break existing code we need unique name. Ideas? May be #each_match


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