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Hello William,
Perl is a programming language easy to use an relative easy to learn. But is very very tricky.
The best way to learn is get a good book . Like 'Learning Perl' and read the book and practice.
If you do not do that you will find a huge amount of special variables with stranges characters. Even google can't answer the meaning of these variables sometimes.
So my more safety and sincere advice is to start with a book. If it is too much for you now. Then go for Perl tutorials in Perl documentation. Start with perl intro for example.
!~ /\*/
!~ mean negation, opposite to =~
// Are the delimiter for regural espresion
\ mean scape character. Here * has a meaning in regular expression world. So use \* meant use directly * character.
All together. The if is true only if $extesinbdoes not contain *.
Best Regards,
Armando Pérez Peña
________________________________
De: William Torrez Corea <willitc9888@gmail.com>
Enviado: miércoles, 3 de agosto de 2022 8:41
Para: beginners@perl.org <beginners@perl.org>
Asunto: What is the mean of the following syntax?
Mean: !~ /\*/
I have the following code:
if ($extension !~ /\*/) {
$backup = $ARGV . $extension;
}
--
With kindest regards, William.
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