Polymorphism and Inheritance in Objective C -

I have coding in objective c and want to create a base controller and want to use polymorphism to create subclass Are there. I am also following the CS 193P Stanford course. Since polymorphism uses common methods of different classes, so how does the excod show that which function from each subclass calls to call if they have the same function?

In addition to this, the function is called in the base class, but returns on zero and it is also called essence. This function is implemented in the sub-class controller and returns a value. How will the base controller call the subclass function if it is low in the hierarchy?

Objective-c is polyimphism is a very standard subtype polymorph that you get in most class based object-oriented languages. This means that an example of a class can be considered as an example of any of its super-classes

In more solid words, this means that your custom UITableViewCell subclass, which we call MyCustomTableViewCell Also a UITableViewCell is expected. If a method is the UITableViewCell parameter, you can give an example of your MyCustomTableViewCell.

The conversation is not correct; If a method is expected to have a frequency of MyCustomTableViewCell, then passing through a regular UITableViewCell is an error.

This works because the subclasses have their Super Class interface MyCustomTableViewCell is automatically all methods UITableViewCell (such as prepareForReuse). The law implementation may override, but you can still send the same message.

Keep in mind that an example of a biweekly vaccine is not treated with the treatment of uTable electricity. If you have overridden then use it again, you will still get your override behavior.

Inheritance:

The concept of heritage brings some of the real world, see programming, it allows to define a class in which one of the specific characteristics There is a set set (such as methods and example variables) and then the other classes from that class can be made. The derived class gets the benefit of all the characteristics of the parent class and usually adds some of its characteristics.

The classes we make are often referred to as a class hierarchy. The class at the top of the hierarchy is known as the base class or the root class and classes derived in the form of subclass or child classes. Any number of subclasses can be obtained from one class. The class from which the subclass is created is called the original class.

Classes should not only be obtained from the root class. For example, a sub-class can also obtain from other sub-classes with the ability to create large and complex class hierarchies. In Objective-C, a subclass can be obtained from only one direct parent class.

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