Mass Deface FIRSTKEY(); defined $k; $k = $self->NEXTKEY($k)) { $fakehash{$k} = undef; } $keylist{$self} = \%fakehash; } sub EXISTS { warn "Memoize::SDBM_File EXISTS (@_)\n" if $Verbose; my $self = shift; _backhash($self) unless exists $keylist{$self}; my $r = exists $keylist{$self}{$_[0]}; warn "Memoize::SDBM_File EXISTS (@_) ==> $r\n" if $Verbose; $r; } sub DEFINED { warn "Memoize::SDBM_File DEFINED (@_)\n" if $Verbose; my $self = shift; _backhash($self) unless exists $keylist{$self}; defined $keylist{$self}{$_[0]}; } sub DESTROY { warn "Memoize::SDBM_File DESTROY (@_)\n" if $Verbose; my $self = shift; delete $keylist{$self}; # So much for reference counting... $self->SUPER::DESTROY(@_); } # Maybe establish the keylist at TIEHASH time instead? sub STORE { warn "Memoize::SDBM_File STORE (@_)\n" if $VERBOSE; my $self = shift; $keylist{$self}{$_[0]} = undef; $self->SUPER::STORE(@_); } # Inherit FETCH and TIEHASH 1;