What is Difference Between Polymorphism and Duck Typing? tccicomputercoaching.com
- October 12, 2019
- Posted by: Riddhi Dhandha
- Category: Python Coaching at TCCI
Polymorphism is the ability of object of different types to be handled by a common interface. While duck typing, is a kind of dynamic typing that allows objects of different types to respond to the same methods.
Polymorphism means a subclass can override a method of the base class. This means a method of a class can do different things in subclasses.
For example: a class
Animal can have a method
talk() and the subclasses
Animal can let the method
talk() make different sounds.
Duck typing means code will simply accept any object that has a particular method.
animal.quack(). If the given object
animal has the method we want to call then we’re good (no additional type requirements needed). It does not matter whether
animal is actually a
Duck or a different animal which also happens to quack. That’s why it is called duck typing: if it looks like a duck (e.g., it has a method called
quack() then we can act as if that object is a duck).
Now, we can conclude is both are related?
They are simply separate features that a programming language may have. There are programming languages which have polymorphism but that do not have duck typing (such as Java). There are also languages that have polymorphism and duck typing (such as Python).
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