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Class::WhiteHole(3) User Contributed Perl Documentation Class::WhiteHole(3)
NAME
Class::WhiteHole - base class to treat unhandled method calls as errors
SYNOPSIS
package Bar;
# DBI inherits from DynaLoader which inherits from AutoLoader
# Bar wants to avoid this accidental inheritance of AutoLoader.
use base qw(Class::WhiteHole DBI);
DESCRIPTION
Its possible to accidentally inherit an AUTOLOAD method. Often this
will happen if a class somewhere in the chain uses AutoLoader or
defines one of their own. This can lead to confusing error messages
when method lookups fail.
Sometimes you want to avoid this accidental inheritance. In that case,
inherit from Class::WhiteHole. All unhandled methods will produce
normal Perl error messages.
BUGS & CAVEATS
Be sure to have Class::WhiteHole before the class from which you're
inheriting AUTOLOAD in the ISA. Usually you'll want Class::WhiteHole
to come first.
If your class inherits autoloaded routines this class may cause them to
stop working. Choose wisely before using.
White holes are only a hypothesis and may not really exist.
COPYRIGHT
Copyright 2000 Michael G Schwern <schwern@pobox.com> all rights
reserved. This program is free software; you can redistribute it
and/or modify it under the same terms as Perl itself.
AUTHOR
Michael G Schwern <schwern@pobox.com>
SEE ALSO
Class::BlackHole
perl v5.18.1 2003-05-28 Class::WhiteHole(3)
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