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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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Invalid version format (underscores before decimal)

(F) Versions may not contain decimals after the optional underscore. See "new()" (version) in the Perl Library Reference Manual (Volume 1) for the allowed version formats.

ISBN 9781906966027Perl Language Reference ManualSee the print edition