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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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Attribute "unique" is deprecated

(D deprecated) You have used the attributes pragma to modify the "unique" attribute on an array, hash or scalar reference. The :unique attribute has had no effect since Perl 5.8.8, and will be removed in the next major release of Perl 5.

ISBN 9781906966027Perl Language Reference ManualSee the print edition