Perl hash

Last Updated on Saturday, 31 July 2010 08:01 Saturday, 31 July 2010 07:28

Perl Hash Let's see on couple examples how we can use perl hash. First we need to know that perl hash value is accessible via key. Therefore:

$myhashvalue = $hash($key)

1. Creating perl hash

#!/usr/bin/perl
$perl_hash{one} = Using;
$perl_hash{two} = perl;
$perl_hash{three} = hash;

print $perl_hash{three} . "\n";

First we have create a $perl_hash to hold three values "Using perl hash" to be accessible via three keys"one two three", respectively. Then we user print to print a hash value using key "three". Use join to print all hash key/value pairs:

#!/usr/bin/perl
$perl_hash{one} = Using;
$perl_hash{two} = perl;
$perl_hash{three} = hash;

print join(" ", %perl_hash) . "\n";

2. Print all perl hash values

#!/usr/bin/perl
$perl_hash{one} = Using;
$perl_hash{two} = perl;
$perl_hash{three} = hash;

while(($key, $value) = each(%perl_hash)) {
	print "$value\n";
}

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