Swift Object Oriented Programming Tutorial - Learn Swift From Scratch - 06

Classes in Swift are building blocks of flexible constructs. Similar to constants, variables and functions the user can define class properties and methods. Swift provides us the functionality that while declaring classes the users need not create interfaces or implementation files. Swift allows us to create classes as a single file and the external interfaces will be created by default once the classes are initialized.

Benefits of having Classes
Inheritance acquires the properties of one class to another class

Type casting enables the user to check class type at run time

Deinitializers take care of releasing memory resources

Reference counting allows the class instance to have more than one reference

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