Explain grooving and shortening of arrays and splicing of arrays?

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How to find the length of an array in perl?

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while(my($key, $value) = each(%hash) ) { print "$key => $value\n"; } my($key, $value); while(($key, $value) = each(%hash) ) { print "$key => $value\n"; } What is the different between these two code in case of "my" usage ?

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What rules must be followed by modules in perl.

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What is subroutine in perl?

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Can inheritance be used in perl?

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What are hashes?

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What is “grep” function in perl?

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“Perl regular expressions match the longest string possible”. What is the name of this match?

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How to make the following assignment, as arrayreference assignment ? my $arr_ref='[1,2,3,4,4,'elem']';

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

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How to concatenate strings with perl?

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