Creating and dereferencing a reference : Reference « Data Type « Perl

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Perl » Data Type » Reference

Creating and dereferencing a reference


   





#!/usr/bin/perl



use strict;

use warnings;



my $variable = 10;

my $reference = \$variable;



print( "\$variable = $variable\n" );

print( "\$reference = $reference\n" );

print( "\$\$reference = $$reference\n" );

$variable++;

print( "\$variable = $variable\n" );

print( "\$reference = $reference\n" );

print( "\$\$reference = $$reference\n" );

Related examples in the same category

1.	Perl 5 Dereferencing Operators
2.	Perl 5 Reference Assignments
3.	Reference is a scalar variable
4.	Increments Reference
5.	Nested reference
6.	References to references
7.	References, Pointers
8.	Creating and Dereferencing Pointers
9.	Creating reference for arrays
10.	Demonstrates the reference syntax
11.	Dereference pointer
12.	Dereferencing a Reference
13.	Dereferencing the Pointer
14.	Direct Reference Techniques
15.	Direct Scalar References
16.	Exchange reference
17.	Get a reference to a file handle by using '$ioreference = *name{IO};'
18.	Get reference of a range
19.	Get the reference of the return value from substr
20.	Get the reference to a scalar by using the form '$scalarreference = *name{SCALAR};'
21.	Get the reference to a subroutine by using the form '$codereference = *name{CODE};'
22.	Get the value from a reference
23.	A reference is a scalar variable pointing-or refering to-something else
24.	Reference Modification
25.	Using $$ to get the value of the reference

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