Open Radar

 
Summary:
I want to order HKQuantitySample by the Quantity when execute HKSampleQuery.
I want something similar as HKPredicateKeyPathQuantity key

The problem: 
I want to fetch only few items, set a limit with the highest value, but I can't sort them by value.
To make it work now I need to fetch all the items to the memory and sort them manually.

Code Example:
let type = HKObjectType.quantityTypeForIdentifier(HKQuantityTypeIdentifierHeight)
let sort = [
  NSSortDescriptor(key: HKSampleSortIdentifierStartDate, ascending: true),
  NSSortDescriptor(key: HKSampleSortIdentifierEndDate, ascending: true),

  //I want one more Sort Item here :(
  //NSSortDescriptor(key: HKSampleSortIdentifierQuantity, ascending: true)
]

let query = HKSampleQuery(sampleType: type, predicate: nil, limit: 2, sortDescriptors: sort) { query, res, error in
  completion(res, error)
}
healthKit.executeQuery(query)

Solution: 
Add HKSampleSortIdentifierQuantity