undefined any

=head2 What is C<(Any)> and why is it undefined?

In Perl 6 any container got a type. If no type is provided it will default to L<Any|type/Any>. However, any instance of Any is
a defined value.

  my $foo;
  say $foo.WHAT # "(Any)" whereby the parenteses indicate the type object
  say so $foo.DEFINITE; # "False"
  my $bar = Any.new;
  say $bar.WHAT # "(Any)"
  say so $bar.DEFINITE; # "True" as it's an instance of Any
  
Any type check Perl 6 does will ask C<.DEFINITE> for help. The user level interface are type smilies.

  my $foo; # is of Type any and undefined
  my Any:D $bar = $foo; # Maybe a runtime or compile time error
  sub foo(Any:D $someparam){}
  foo($foo); # Maybe a runtime or compile time error