A smart match that uses an explicit C<~~> operator, such as C<EXPR ~~ EXPR>.
+B<NOTE:> You will often have to use C<$c ~~ $_> because the default case
+uses C<$_ ~~ $c> , which is frequentlythe opposite of what you want.
+
=item Z<>4.
A boolean comparison operator such as C<$_ E<lt> 10> or C<$x eq "abc">. The
(C<< < >>, C<< > >>, C<< <= >>, C<< >= >>, C<< == >>, and C<< != >>), and
the six string comparisons (C<lt>, C<gt>, C<le>, C<ge>, C<eq>, and C<ne>).
-B<NOTE:> You will often have to use C<$c ~~ $_> because
-the default case uses C<$_ ~~ $c> , which is frequently
-the opposite of what you want.
-
=item Z<>5.
At least the three builtin functions C<defined(...)>, C<exists(...)>, and