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Perl Language Reference Manual
by Larry Wall and others
Paperback (6"x9"), 724 pages
ISBN 9781906966027
RRP £29.95 ($39.95)

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5.6 Subscripts

An array is subscripted by specifying a dollar sign ($), then the name of the array (without the leading @), then the subscript inside square brackets. For example:

@myarray = (5, 50, 500, 5000);
print "The Third Element is", $myarray[2], "\n";

The array indices start with 0. A negative subscript retrieves its value from the end. In our example, $myarray[-1] would have been 5000, and $myarray[-2] would have been 500.

Hash subscripts are similar, only instead of square brackets curly brackets are used. For example:

%scientists = 
    "Newton" => "Isaac",
    "Einstein" => "Albert",
    "Darwin" => "Charles",
    "Feynman" => "Richard",
print "Darwin's First Name is ", $scientists{"Darwin"}, "\n";
ISBN 9781906966027Perl Language Reference ManualSee the print edition