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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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Recursive inheritance detected in package '%s'

(F) While calculating the method resolution order (MRO) of a package, Perl believes it found an infinite loop in the @ISA hierarchy. This is a crude check that bails out after 100 levels of @ISA depth.

ISBN 9781906966027Perl Language Reference ManualSee the print edition