I'll edit it above. But I noticed that it's not possible to override private methods in typescript so I have to apologize again. It would be great if it would be possible one day, though. Skip to content. Star New issue. Jump to bottom. Labels Working as Intended.
Working as Intended. Linked pull requests. Copy link. Doesn't the exact same logic apply within the hierarchy? Can you find an example where this suggestion could cause an issue? RyanCavanaugh mentioned this issue Aug 17, RyanCavanaugh closed this Aug 22, RyanCavanaugh removed the Suggestion label Aug 22, What is going on here?
If a subclass defines a class method with the same signature as a class method in the superclass, the method in the subclass hides the one in the superclass.
The distinction between hiding and overriding has important implications. Let's look at an example to see why. This example contains two classes. The main method in this class creates an instance of Cat , casts it to a Animal reference, and then calls both the hide and the override methods on the instance.
The output from this program is as follows: The hide method in Animal. The override method in Cat. The version of the hidden method that gets invoked is the one in the superclass, and the version of the overridden method that gets invoked is the one in the subclass. These rules are driven by the following two principles:. Methods that are already overridden by other candidates are ignored. This circumstance can arise when supertypes share a common ancestor.
The method Dragon. If two or more independently defined default methods conflict, or a default method conflicts with an abstract method, then the Java compiler produces a compiler error. You must explicitly override the supertype methods. Consider the example about computer-controlled cars that can now fly. You have two interfaces OperateCar and FlyCar that provide default implementations for the same method, startEngine :.
You could invoke any of the of the default implementations with the super keyword. The name preceding super in this example, FlyCar or OperateCar must refer to a direct superinterface that defines or inherits a default for the invoked method.
This form of method invocation is not restricted to differentiating between multiple implemented interfaces that contain default methods with the same signature.
You can use the super keyword to invoke a default method in both classes and interfaces. Inherited instance methods from classes can override abstract interface methods. Consider the following interfaces and classes:. The method Mustang.
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