From: David Masover <ninja@...>
Date: 2008-07-19T13:20:27+09:00
Subject: Re: Suggestions for a parsing strategy?

On Friday 18 July 2008 22:38:43 Eric I. wrote:

>   s.scan(/(\w+)(\((.*?)\))?/).map { |root, junk, suffixes|

This pattern looks really useful... Looking at the docs for scan, it looks 
like it can take a block.

Which just leaves one question: Why isn't this an Enumerator in Ruby 1.9? I 
don't think the original meaning (of producing an array) is made much more 
difficult by the form

s.scan(/.../).to_a

And I suspect that it would most often be useful for things like #map, if not 
used in block form outright. Making it an Enumerator would be somewhat more 
efficient than building a whole array first -- and more responsive, if it's a 
large string.