From: Daniel Bretoi <lists@...>
Date: 2003-12-18T04:23:46+09:00
Subject: gsub question

perl -e '$a="hello hi hello";$a =~ s/(\w+)/$1a/g;print $a; '
helloa hia helloa

ruby -e 'a="hello hi hello";a.gsub!(/(\w+)/,"#{$1}a"); puts a'
a a a

Why?  I'm expecting the same result as in perl.

ruby -e 'a="hello hi hello";a.gsub!(/(\w+)/) { |k| k = k + "a"}; puts a'
helloa hia helloa

does however work.

Can someone try to explain why the first doesn't work?

db


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