How to count no of occurrence of a unique patterns in perl?

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Give an example of the -i and 0s option usage.

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Explain chop?

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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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Define print() function in perl?

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What does next statement do in perl?

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What does 'do' statement do in perl?

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Elaborate on perl bite-wise operators.

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There are two types of eval statements i.e. Eval expr and eval block. Explain them.

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How can memory be managed in Perl?

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How to get help for perl?

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What are the advantages of perl programming?

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