What is structural identity?

Asked on 07/31/2024

1 search

Structural identity refers to the concept where instances of a value type do not share state, meaning changes to one value cannot affect other values of the same type. Additionally, value types do not have identity, which means that if two values are equal, they are interchangeable. This is a key property of value types in Swift, such as integers, booleans, and floating-point numbers, and it ensures that instances of these types are independent of each other.

For more details, you can refer to the session A Swift Tour: Explore Swift’s features and design at the 01:42 mark.