“Functions are a first-class type” in swift?

Question

the little knowledge , I have about first class function is that it supports passing functions as arguments and we can also return them as the values in another function ... I a

Answer 1

Properties of First class function

1. A function is an instance of the Object type.
2. You can store the function in a variable.
3. You can pass the function as a parameter to another function.
4. You can return the function from a function.
5. You can store them in data structures such as hash tables, lists, …

refer https://www.geeksforgeeks.org/first-class-functions-python/