From: Sam Kong <sam.s.kong@...>
Date: 2006-08-12T09:54:04+09:00
Subject: String#split(/\s+/) vs. String#split(/(\s+)/)

Hello Rubyists,

I'm reading Ruby Cookbook.
The first chapter is about String.
One of the examples shows the differenct between String#split(/\s+/) and 
String#split(/(\s+)/) without much explanation.
I understand what sub-grouping is in regex.
Bug I don't understand what role that plays in String#split.

s = "one two  three"

p s.split(/\s+/) #=> ["one", "two", "three"]
p s.split(/(\s+)/) #=> ["one", " ", "two", "  ", "three"]


Could anybody explain it, please?

Thanks,
Sam

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