In some code I am maintaining, I have found the expression: <pre class="prettyprint"><code>$r->{DISPLAY} =~ s/\Device//s; </code></pre> What surprises me is that it matches both device and Device! I have not found any mention of \D in the documentation, only \d. Can someone clarify please...

<code>\D</code> is the negation of <code>\d</code>, i.e. it matches anything that is not a digit.

What does \D do in Perl regular expressions

In some code I am maintaining, I have found the expression:

$r->{DISPLAY} =~ s/\Device//s;

What surprises me is that it matches both device and Device!

I have not found any mention of \D in the documentation, only \d.

Can someone clarify please...

436

asked Jun 20 '11 12:06

\D is the negation of \d, i.e. it matches anything that is not a digit.

120

answered Nov 15 '22 21:11

If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!