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The editor would like to share with you the $in Perl language. What does it mean? I believe most people don't know much about it, so share this article for your reference. I hope you will gain a lot after reading this article. Let's learn about it together.

There are many system variables in the perl language that play an important role, such as the frequently used $_, $@ variables. There are some infrequent ones, such as the $here. .

. Represents the current line number of the previous read file handle, which can be used when reading the file.

Open (IN, "$in") or die $!; while () {chomp;next if ($. = = 1);.} above is all the content of this article "what does $. In Perl language mean?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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