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What is the use of the special variable $& , $`, $& # 039 in Perl

2025-01-30 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >

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Editor to share with you the special variable in Perl {* *} , editor to share with you, {* *} # 039; what's the use? I hope you will get something after reading this article. Let's discuss it together.

Special variables $&, $`, $'in Perl are used in pattern matching

$& used to store the values in the match

$`is used to store all the previous characters in the match

$'is used to store all the characters after the match

Such as:

#! / usr/bin/perl-wmy $a = "left middle,right"; $a = ~ / (\ walled,) /; print $&. "\ n"; print $`. "\ n"; print $'. "\ n"

The result of the execution is:

Middle,leftright has finished reading this article. I believe you have read this article on the special variable {* *} , in Perl. I believe you have a certain understanding of "what is the use of?". If you want to know more about it, welcome to follow the industry information channel, thank you for your reading!

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