Hashes: An associative array

    

% pet = ( "Name"  => "Sneaky",
          "Type"  => "Cat",
          "Owner" => "Carol",
          "Color" => "yellow",
         );

1.	An associative array, called a hash, is an unordered list of key/value pairs, indexed by strings.
2.	Associative arrays or hashes
3.	Create hash from scalar variable
4.	Create hash with => operator
5.	Create hash with qw
6.	Create hash without using the quotation marks
7.	Creating and accessing hash elements
8.	Hash example
9.	Mix scalar, list and hash
10.	Using the => operator.
11.	Pass key and get value
12.	Setting values into a hash named %hash
13.	Empty hash
14.	Converting a hash into an array by simple assignment
15.	List context and hash context

Hashes: An associative array : Hash Definition « Hash « Perl