Bob Nystrom
8436ead62e
Implement a new `supertype` property on Class objects that returns the superclass of a given class. The primitive `class_supertype` checks if the class has a superclass (returning null for Object) and returns the superclass object. Includes documentation in the class reference and a test file verifying behavior for explicit superclasses, implicit Object inheritance, and Object's null supertype.
493 B
493 B
^title Class Class ^category core
name
The name of the class.
supertype
The superclass of this class.
:::dart
class Crustacean {}
class Crab is Crustacean {}
IO.print(Crab.supertype) // "Crustacean"
A class with no explicit superclass implicitly inherits Object:
:::dart
IO.print(Crustacean.supertype) // "Object"
Object forms the root of the class hierarchy and has no supertype:
:::dart
IO.print(Object.supertype) // "null"