How should I reason when I have to choose between a class, struct and enum in Swift?

Question

Since classes, structs and enums all has constructors, properties and computed properties, how should I reason when choosing between them?

Answer 1

The most important difference between classes and other named types (structs/enums) is:

Structs cannot be subclasses (or substructs, so to speak) of anything. Nor can they be subclassed themselves. Inheritance is completely out of picture with structs. Same goes for enums.