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Re: Regular Expression Question

by Roy Johnson (Monsignor)
on Jul 21, 2004 at 23:41 UTC ( [id://376418]=note: print w/replies, xml ) Need Help??

in reply to Regular Expression Question

Note that a question mark after a quantifier ({2}?) does not mean optional, but rather non-greedy. You need to put parens around the sub-expression to make it optional:
If the optionals aren't independent, you may need to nest them:
/^(\d{6} #leading digits (?:\.? #if dot, then (?:(?:\d{2})? #if two digits, then \w?)))$/x; #maybe a character
Note the use of anchors, to prevent matching part of the name.

We're not really tightening our belts, it just feels that way because we're getting fatter.

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Re^2: Regular Expression Question
by MistaMuShu (Beadle) on Jul 22, 2004 at 19:02 UTC
    Sorry, but I think when you say "use of anchors", it means the ^ and $ sign correct?

    Yeah, I guess I oversimplified the expression I wanted to search for, but this has been most helpful. Thanks.

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