Re: about a regex

Adam Hopkins <[email protected]> Fri, 31 Dec 2021 22:38:29 -0600

Newsgroups	gmane.comp.lang.perl.beginners
Message-ID	<CAEJht3cg3ypjM=sDrU3+O+yVxpbYTQpsMJyF6Y3Vkq6-p-GntQ@mail.gmail.com>

If you add an underscore (the equivalent of \w): [a-zA-Z0-9*_*]

Then \W is the opposite.


If you wanted to not match [a-zA-Z0-9]

You could do

$string !~ m/[a-zA-Z0-9]/


On Fri, Dec 31, 2021 at 10:23 PM Piper H <[email protected]> wrote:

> Hello
>
> I know [a-zA-Z0-9] means words and numbers.
> But what's the reverse of this regex?
>
> Thank you.
>