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hi everybody my name is jason williams thanks for watching today weamp;#39;re going to talk about the mvvm pattern and how we can make our view models talk to each other typically when you have a view model that has some data that it needs to share with another view model what you might do is you might set up some kind of property that the other view model can have set and thatamp;#39;s fine however what that does is it creates a dependency between your view models your view models end up having to know about each other and thatamp;#39;s not typically a good design what you donamp;#39;t want to do is have the data shared directly between view models so what should we do instead the solution to that problem is called a messenger and a messenger is basically just an implementation of the observer pattern if youamp;#39;re familiar with that so the observer pattern would be pretty simple to implement in this case weamp;#39;re going to create the messenger so it has a subscribe and un
