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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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No DB::sub routine defined

(F) The currently executing code was compiled with the -d switch, but for some reason the current debugger (e.g. perl5db.pl or a Devel:: module) didn't define a DB::sub routine to be called at the beginning of each ordinary subroutine call.

ISBN 9781906966027Perl Language Reference ManualSee the print edition