Array of Nested Type: Why Does the Compiler Complain?

Question

class ClassA {
    class ClassB {
    }
}
let compiles: [ClassA.ClassB]
let doesNotCompile = [ClassA.ClassB]()

Playground execution failed: MyPlayg

Answer 1

compiles is an array of type ClassA.ClassB

In doesNotCompile you are trying to use an array as a function. Didn't you mean:

let doesNotCompile = ClassA.ClassB()