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in todays video were going to take a look at object identifiers a pretty awesome way to get unique ids for objects in terms of classes and meta types well do some examples in a playground this is commonly used in dependency injection so lets get started by dropping a like down below hit subscribe you guys know the drill lets open up xcode and start by creating a blank playground were going to creatively call this object id and well go through a few examples together to see the benefit of this as well as how to actually use it so let me go ahead and bump up my font size here and well get started by creating a class so lets say we have a class of person itll have a name of type string and well have a constructor on here that takes in a name of type string and just assigns it to that property just like that so pretty simple so far nothing too scary we can go ahead and create an instance of this person and ill use myself as the guinea pig here and we now have a instance of a pe