I thought I read somewhere that there is a way to intercept an attempted access of a non-existent object property.
For example, suppose an attempt is made to access the property "bar" of an object "foo" which is an instance of the class "FooBar" (i.e. x = foo.bar). Further suppose that the property "bar" does not exist for "foo". Is there a way to define a method in FooBar that will catch the attempt to access the non-existent property "bar" and return a value as if "bar" actually did exist? Even something similar to the way the prototype property works would be helpful (if it is scoped to the instance rather than to the class). Thanks.
