Re: a regex question ..

On Sat, 30 Apr 2005 19:22:31 GMT, "John W. Krahn"
<someone@xxxxxxxxxxx> wrote:


>( my $newname = "new-$name" ) =~ s/(?<!\d)(\d)(?!\d)/0$1/g;

John,

Thanks for the above - I can see from a book I have that

(?!\d)

means that there must not be a single digit ahead of the the single
digit, (\d), but does

(?<!\d)

mean there must not be a single digit in front of the (\d) digit?

I didn't know about the look ahead etc so thanks for that ....

Cheers

Geoff
.

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