override - Overriding default value of instance var -

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given class obj,

class obj: nsobject {     var x = "x" }

and subclass, obj1, how change default value of var x?

simply setting new value make sense, seems error out...

class obj1: obj {     var x = "y" }

❗️ cannot override stored property 'x'

define init() method as:

init () {   super.init()   x = "y" }

you'll want other initializers in obj1 invoke self.init(). apple documentation has long discussion on designated initializers , inheritance vis-a-vis initializers.


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