Document .VAR

lib/Language/mop.pod

@@ -2,11 +2,23 @@
 
 =TITLE Meta-Object Protocol
 
+=SUBTITLE Introspection and the Perl 6 Object System
+
 TODO
 
 =head1 Metamethods
 
-TODO
+These are introspective macros that resemble method calls.
+
+Note that if you want to call a method by the same name of an object, use
+quotes around the method name to call it indirectly:
+
+    class MY-CLASSES-ARE-ALL-CAPS {
+        method WHY { "I DON'T KNOW" }
+    }
+    my $c = MY-CLASSES-ARE-ALL-CAPS.new;
+    say $c.WHY      # "(MY-CLASSES-ARE-ALL-CAPS)"
+    say $c."WHY"()  # "I DON'T KNOW"
 
 =head2 X<WHAT|syntax,WHAT>
 
@@ -40,4 +52,11 @@ The object has a valid concrete representation.
 
 Returns the underlying C<Scalar> object, if there is one.
 
+The presence of a C<Scalar> object indicates that the object is "itemized".
+
+    .say for (1, 2, 3); # not itemized, so "1\n2\n3\n"
+    .say for [1, 2, 3]; # itemized, so "1 2 3\n"
+    say (1, 2, 3).VAR ~~ Scalar; # False
+    say [1, 2, 3].VAR ~~ Scalar; # True
+
 =end pod