Re: [swift-users] Weak references in generic types

> On Sep 8, 2016, at 6:28 AM, Karl Wagner via swift-users > wrote: > > It is in some sense a language limitation that we cant express what you're > talking about. If we weren't using mailing lists it would be easier to search > for "protocol self-conformance" on

Re: [swift-users] Weak references in generic types

What I'm trying to say is that P is a protocol and not a class, so it does not conform to AnyObject. P does not conform to P. It is in some sense a language limitation that we cant express what you're talking about. If we weren't using mailing lists it would be easier to search

Re: [swift-users] Weak references in generic types

@Karl, You say "In the second example, you’re creating WeakReference. P does not conform to P or to AnyObject.", but P does conform to AnyObject. I suspect it is a compiler limitation/ bug. -- Howard. On Thursday, 1 September 2016, Karl wrote: > > On 1 Sep 2016, at

Re: [swift-users] Weak references in generic types

Playing around I found that if you make the protocol @objc instead of AnyObject then it works :). EG: struct WeakReference { weak var value: T? } @objc protocol P { // Note @objc, class or AnyObject does not work var i: Int { get } } class CP: P { var i: Int = 0 } let weakPs:

[swift-users] Weak references in generic types

Hi, I am wanting to use weak references in generic data structures; in the example below Array, but in general any generic type. I can almost get it to work :( My experiments started off well; the following works: // Array of weak references OK struct WeakReference { weak var value: T? }