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Perl/Basics/Hashes/Introduction
From NetSec
Hashes are prefixed by the % character. Hash element values are prefixed by $. A hash element may contain another hash, an array, or a scalar.
- You can directly modify the key inside of a hash
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<syntaxhighlight lang="perl">$hash{'key'} = 'value';</syntaxhighlight> |
- You can also create a key => value pair on declaration
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<syntaxhighlight lang="perl">my %hash = ('key' => 'value', 'key2' => 'value2');</syntaxhighlight> |
- Example:
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<syntaxhighlight lang="perl">my %user; $user{'username'} = "hatter"; $user{'network'} = "irc.blackhatacademy.org"; print "The user " . $user{'username'} . " is connected to " . $user{'network'} . "\n"; </syntaxhighlight> |
