On Jun 7, 2008, at 1:54 PM, Denis Bohm wrote:
That is handled by the Java example above (via the "Object... args"). A method with any number of arguments can be passed to registerUndoWithTarget. So you could do something like:undoManager.registerUndoWithTarget(this, "setFrame", true, splineStruct);
So, Java *can* do dynamic dispatch, but cannot catch a method dispatch automatically -- you effectively have to compose the method invocation manually through a comparatively verbose API.
Thus we have a pattern related gem: If you are coming from Java to Objective-C, the runtime's ability to easily capture, delay, and redirect method invocations is a pattern you likely haven't used before. And it is pervasive throughout the Cocoa frameworks -- Undo, Distributed Objects, Key/Value Observation, Bindings, etc... all rely upon it.
b.bum
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