What does the command "use strict" do and why should you use it?

2 Answers   Symphony, TCS,

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Explain substr function in perl?

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Explain about the applications of perl?

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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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How do I read command-line arguments with Perl?

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How will you get the count of parameters passed to a perl subroutine?

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How do you find the length of an array?

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Explain which feature of PERL provides code reusability?

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What is a chomp() function in perl?

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If EXPR is an arbitrary expression, what is the difference between $Foo::{EXPR} and *{"Foo::".EXPR}?

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Explain socket programming in perl?

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Explain lexical variables.

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