<p dir="ltr">If you could define your needs. Is it a one to one ? Or one to many relationship. I would look into the Observer Design pattern.</p>
<div class="gmail_extra"><br><div class="gmail_quote">On Oct 5, 2016 7:26 PM, "Jordan Rose via swift-users" <<a href="mailto:swift-users@swift.org">swift-users@swift.org</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
> On Oct 5, 2016, at 14:43, Jens Alfke via swift-users <<a href="mailto:swift-users@swift.org">swift-users@swift.org</a>> wrote:<br>
><br>
><br>
>> On Oct 5, 2016, at 1:50 PM, Bob Miller via swift-users <<a href="mailto:swift-users@swift.org">swift-users@swift.org</a>> wrote:<br>
>><br>
>> This is a Swift3 newbie question that I’ve not found a solution to. Has there been any consensus reached on an equivalent approach to the AppKit class NSInvocation ? Here’s a simple objC example.<br>
><br>
> Swift doesn’t have an equivalent because the language simply isn’t as dynamic as Objective-C: there is no mechanism to invoke a method at runtime given its name.<br>
><br>
> If you’re on an Apple platform, and the method you want to call, and its class, are @objc — then you can literally use NSInvocation from Swift to do this. But not otherwise.<br>
<br>
However, there are usually better answers than NSInvocation (both in Swift and Objective-C). What are you actually trying to do?<br>
<br>
Jordan<br>
<br>
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