package My::Class; use vars qw( $VERSION ); BEGIN { $VERSION= 1.01 } package My::Class::_implement; BEGIN { my $offset= 0; for my $member ( qw( FOO BAR BAZ BIF ) ) { eval "sub $member() { $offset }; 1" or die "eval failed: $@"; $offset++; } } sub My::Class::GetObjectPackage { my $class= shift(@_); return $class . "::Object"; } sub My::Class::new { my $class= shift(@_); bless [], $class->GetObjectPackage(); } sub My::Class::Object::Foo { my $self= shift(@_); my $value= $self->[FOO]; $self->[FOO]= shift(@_) if @_; return $value; }