Apple's documentation(https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/AccessControl.html#//apple_ref/doc/uid/TP40014097-CH41-ID3) says: "Class members with public access, or any more restrictive access level, can be overridden by subclasses only within the module where they’re defined."
I know what a subclass is. but what is a class member?
Are you already clear on type / class ...?
See 'Custom Types' at that link.
A func, a property (var) of a class are class members.
To break this down:
A member is either a property or a method.
An instance member is a member of an instance of a class or a struct; sometimes folks say member when you they mean instance member, but it’s best to only do that when the context is clear.
A class member is a member of a class rather than an instance.
A static member is a member of a class or a struct; static members can’t that be overriden.
So, for example:
class MyClass {
class var myClassProperty: Int { return 42 }
class func myClassMethod() {
}
static var myStaticProperty: Int { return 42 }
static func myStaticMethod() {
}
let myInstanceProperty: Int = 42
func myInstanceMethod() {
}
}
struct MyStruct {
// Class members are only allowed within classes.
//
// class var myClassProperty: Int { return 42 }
// class func myClassMethod() {
// }
static var myStaticProperty: Int { return 42 }
static func myStaticMethod() {
}
let myInstanceProperty: Int = 42
func myInstanceMethod() {
}
}Share and Enjoy
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