shadowing-across-modules.swift

// Swift compilation issue
// Shadowing across modules

// Module 1
public struct S {
    public static var a = S(a: 0)
    public var a: Int
    public init(a: Int) { self.a = a }
}

// Module 2
extension S {
    public static var z: S {
        S.a.a = 0
        return S.a // If S.a is in another module: Instance member 'a' cannot be used on type 'S'
    }
}

////////////////

// Module 1
public struct S {
    public var a: Int
    public init(a: Int) { self.a = a }
}

// Module 2
extension S {
	public static var a = S(a: 0)
    public static var z: S {
        S.a.a = 0 // Static member 'a' cannot be used on instance of type 'S'
        return S.a
    }
}