I am calling this function,
func createMOforEntityName<T, U >(entityName:String,
context:NSManagedObjectContext, key:String, keyAttribute: U) -> (Bool, T) {
guard let mo:T = self.moExistsWith(entityName, key:key, keyAttribute:
keyAttribute) else {
let mo:T =
NSEntityDescription.insertNewObjectForEntityForName(entityName,
inManagedObjectContext: context) as! T
return (false, mo)
}
return (true, mo)
}
with this call:
let (already_Exists, aNewMO:ESLSizeMO) = createMOforEntityName("ESLSizeEntity",
context: self.managedObjectContext, key:"sizeName", keyAttribute: sizeName)
In this case, sizeName is a String, but key attribute could also be a Double.
The Error is on the calling line:
Cannot invoke 'createMOforEntityName' with an argument list of type '(String,
context: NSManagedObjectContext, key: String, keyAttribute: String)'
The hint says: 'Expected an argument list of type '(String, context:
NSManagedObjectContext, key: String, keyAttribute: U)’
My question is how to call “createMOforEntityName” when ‘U’ could either be a
String, or a Double.
Thanks in advance.
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