How do you use references and memory usage with a short example?

This content covers the topic of using references in Perl, along with a short example demonstrating memory usage.
perl, references, memory usage, programming, coding
# Define a scalar value my $scalar = 5; # Create a reference to the scalar my $ref = \$scalar; # Dereference to get the value print "Value: $$ref\n"; # Output: Value: 5 # Modify the original scalar via the reference $$ref = 10; print "New Value: $scalar\n"; # Output: New Value: 10 # Create an array reference my @array = (1, 2, 3); my $array_ref = \@array; # Access the array using the reference print "First element: ${$array_ref}[0]\n"; # Output: First element: 1

perl references memory usage programming coding

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