Hello Monks I am trying to build my know how on perl regular expression from cookbook http://docstore.mik.ua/orelly/perl/cookbook I am getting stuck at some point . How to read? 
/(?:\w+\s+fish\s+){2}(\w+)\s+fish/i;

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~ s/man(?=\d)/cat/

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What does '(?=\d)' signify here . Is there any good link which will explain all nitty gritty of regular expression from basic level? Thanks in advance Bharat

In reply to Reading Reg Exp by bharatbsharma

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