Re: Re: Regular Expression Question

Thanks for your help. Why is there a "!" in front of the 1st regexp ? I understand the 2nd.

Comment on Re: Re: Regular Expression Question

Replies are listed 'Best First'.
Re: Re: Re: Regular Expression Question by nevyn (Monk) on Dec 04, 2003 at 20:25 UTC
The character class is negated, note where the ^ is... `! /[^a-zA-Z0-9,]/` [download] ...however I'm not sure the double negative is faster enough to warrant not just doing the more obvious... `/^[a-zA-Z0-9,]+$/` [download] ...it's also not stated whether /^$/ is valid or not, which is different for the above two. -- James Antill	[reply] [d/l] [select]