Swift Object ModelLesson 26Free preview

Swift OOP

This lesson is part of Swift · All levels

Summary

This lesson examines the paradigm of object-oriented programming (OOP) in Swift as well as the fundamental comparison between Struct (Value Type) and Class (Reference Type). Swift strongly advocates the use of Struct as a first choice, while Class is used when requiring inheritance or shared reference identity.

Key points

Class is Reference Type (saved in heap, several variables share the same instance)
Struct is a Value Type (stored in stacks, independently copied when assigned or passed)
Only the Class supports inheritance and deinitializers.
Struct automatically obtains a memberwise initializer from the compiler

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