swift - Core Data generates an NSManagedObject subclass with a property of type NSNumber, but it's a Bool -

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i created core data data model , added entities. i'm generating nsmanagedobject subclasses.

in generated code, found 1 of properties, type "boolean" in data model, has turned property of type nsnumber!

that's not correct, thought. nsnumber not boolean. why doesn't use bool type?

then thought might 1 of annoying things of objective-c. think int , double, bool cannot saved core data has use nsnumber. right?

how convert nsnumber bool , how convert bool nsnumber? maybe 0 = false , 1 = true? other values? isn't type-safe @ all...

for question how convert nsnumber bool , how convert bool nsnumber? u can below, nsnumber objects

//convert bool number  nsnumber *boolinnumber = [nsnumber numberwithbool:yes]; //or no  //get back, convert number bool  nsnumber *anum = [nsnumber numberwithbool:yes]; //get nsnumber instance bool numberinbool = [anum boolvalue];

and aslo u can convert other types, more info check class reference hear

sorry delay, , swift version,

  var numinbool:nsnumber? //is nsnumber instance   numinbool = nsnumber(bool: true) //get number bool (number in bool)    var boolinnum:bool? //it boolean   boolinnum = numinbool!.boolvalue  //get bool number (bool number)

yes right... :) per @fred doc said, 

let numinbool =     nsnumber(bool: true)  let boolinnum =     numinbool.boolvalue

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