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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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Use of "package" with no arguments is deprecated

(D deprecated) You used the package keyword without specifying a package name. So no namespace is current at all. Using this can cause many otherwise reasonable constructs to fail in baffling ways. use strict; instead.

ISBN 9781906966027Perl Language Reference ManualSee the print edition