Sorting Array received from Core Data in Swift

Question

I have a NSManagedObject my own class (BPMonitor) for my Entity - BPMonitor:

import UIKit
import CoreData

@objc(BPMonitor)
class BPMonitor: NSManagedObject {
    @NSManaged var sisPress: String
    @NSManaged var diaPress: String
    @NSManaged var hbPress: String
    @NSManaged var datePress: NSDate
}

In code I receive data from Core Data to array:

var results:[BPMonitor]=[]
...
...

How I can sort my array for field datePress (NSDate) in descending order?

akashivskyy · Accepted Answer · 2014-08-28 13:07:19Z

11

You just need to use standard sort or sorted functions provided by Swift:

var results: [BPMonitor] = []

var sortedResults = sorted(results, {
    $0.datePress.compare($1.datePress) == NSComparisonResult.OrderedDescending
})

edited Aug 28, 2014 at 13:07

answered Aug 28, 2014 at 12:43

akashivskyy

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2 Comments

BJ Miller Over a year ago

Why wouldn't you use an NSSortDescriptor when fetching your Core Data entities?

BJ Miller Over a year ago

It lets Core Data do the work for you, and while you can sort after you retrieve, it's just an extra operation that has to take place. An NSFetchRequest takes an array of NSSortDescriptor objects, so even if you have just one NSSortDescriptor, drop it in an array and you should be ok.

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