Why aren't Perl's patterns regular expressions?

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List the operator used in Perl?

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my @array=('data1','data2'); my @array1=('data1','data2'); my ($i,$k); $i=7; $k=7; while($i){ $array [++$#array] = 'ree'; $i--; print "@array"; } while($k){ push(@array1,'ree'); $k--; print "@array1"; } Are these two while loop are doing the same functionality ? What may be the difference?

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Does Perl have reference type?

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How to turn on Perl warnings? Why is that important?

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What happens when you return a reference to a private variable?

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How many ways can we express string in Perl?

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Assuming both a local($var) and a my($var) exist, what's the difference between ${var} and ${"var"}?

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How do I read command-line arguments with Perl?

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What are the advantages of perl programming?

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How do I send e-mail from a Perl/CGI program on a Unix system?

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package MYCALC; use Exporter; our @EXPORT = (); our @ISA = qw(Exporter); our @EXPORT_OK = qw(addition multi); our %EXPORT_TAGS = (DEFAULT => [qw(&addition)],Both => [qw(&addition & +multi)]); sub addition { return $_[0] + $_[1]; } sub multi { return $_[0] * $_[1]; } 1; Program: use strict; use warnings; my @list = qw (2 2); use Module qw(:DEFAULT); print addition(@list),"\n"; Above coding is my module MYCALC and the program which using this module, I have not exported any function using @EXPORT, but I have used the DEFAULT in %EXPORT_TAGS with the function addition, when I call this function from the main it says the error as,

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