db4
Slava Pestov 2008-10-01 03:35:41 -05:00
parent b546ad3c6d
commit c3f9d2180a
1 changed files with 4 additions and 3 deletions

View File

@ -28,12 +28,13 @@ $nl
$nl
"Classes themselves form a class:"
{ $subsection class? }
"You can ask an object for its class or superclass:"
"You can ask an object for its class:"
{ $subsection class }
{ $subsection superclass }
{ $subsection superclasses }
"Testing if an object is an instance of a class:"
{ $subsection instance? }
"You can ask a class for its superclass:"
{ $subsection superclass }
{ $subsection superclasses }
"Class predicates can be used to test instances directly:"
{ $subsection "class-predicates" }
"There is a universal class which all objects are an instance of, and an empty class with no instances:"