Can a property of a class be the class itself?

Question

Can a class have a property and the class of the property is the class itself?

@interface testClass:NSObject
@property (nonatomic, strong) testClass *testProperty;
@end

@implementation testClass
@end

Just 3 characters to answer this post.. "YES" – Salman Zaidi Dec 02 '14 at 07:57 — Salman Zaidi, Dec 02 '14 at 07:57
What happened when you tried it? – jscs Dec 02 '14 at 08:42 — jscs, Dec 02 '14 at 08:42

score 0 · Accepted Answer · answered Dec 02 '14 at 07:57

0

Yes it can have, this is called self-referencing class.

Why it is not a compiler issue ?

Because you create a pointer to the object of same type, not the object.

This is frequently seen in C / C++ data structures like Linked List.

answered Dec 02 '14 at 07:57

Anoop Vaidya

@Hancock_Xu: One sidenote: Always follow naming conventions... ClassName should be CamelCase as `TestClass` – Anoop Vaidya Dec 02 '14 at 08:51

1 Answers1