On Jun 16, 2017, at 13:48 , Charles Srstka <cocoa...@charlessoft.com> wrote:
> 
> This is incorrect.

It’s incorrect as a 2-way binding, but it works as a pair of so-called 1-way 
bindings, with the proviso that they may need to be unbound manually, to 
prevent reference cycles, which it sounds like is what Jerry is doing.

The thing that I always said that no one believed is that there’s really no 
such thing as 1-way binding, and NSObject’s default implementation of the 
“bind:…” method does *not* establish a binding. It’s *part* of the 
implementation of a proper 2-way binding (as explained in the documentation you 
referenced), and for a given receiver class the method only establishes a 2-way 
binding if it’s an override that provides the rest of the functionality.

But every time I said that (until I stopped saying it about 10 years ago), 
people would jump in and say that the NSObject implementation really does 
establish a binding, and if it’s only one-way, that’s 
just-fine-with-them-thank-you-very-much.

Thanks for the mention of mmalc, BTW. Them were the times. <elderly cough>

_______________________________________________

Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)

Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com

Help/Unsubscribe/Update your Subscription:
https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com

This email sent to arch...@mail-archive.com

Reply via email to