Is Swift Pass By Value or Pass By Reference

Question

I\'m really new to Swift and I just read that classes are passed by reference and arrays/strings etc. are copied.

Is the pass by reference the same way as in Objecti

Answer 1

The Apple Swift Developer blog has a post called Value and Reference Types that provides a clear and detailed discussion on this very topic.

To quote:

Types in Swift fall into one of two categories: first, “value types”, where each instance keeps a unique copy of its data, usually defined as a struct, enum, or tuple. The second, “reference types”, where instances share a single copy of the data, and the type is usually defined as a class.

The Swift blog post continues to explain the differences with examples and suggests when you would use one over the other.