SPUG: regarding Perl doubt

battipatisainagendra Bhavaniprasad sainagendrabhavaniprasad at gmail.com
Sun Jan 25 00:29:57 PST 2009

       I am new to this community.I have question regarding Pattern Matching
in Perl.

1.when /ab?/ is given it returns true for "abbbb" but my question is "?"
will support zero or one occurrence.

2.When i am giving /[0-9a-zA-Z] it returns true for "0AA" and "9aa" but my
question is IT HAS TO ACCEPT ONLLY "0aa"/"9fG"....so on.

3.What is the difference between Pattern Matching and regular expression?Are
both same?

Please reply ASAP.

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