CODEWITHSUNDEEP
iosarraysswiftparse-platform
hamdi islam
hamdi islam

Reputation: 1521

Swift: retrieving data numbers from parse and counting the average value

i hope you all doing great :)

my code here retrieve data from classname score, the data is in numbers. what i'm trying to do is to grab all score values for a particular player and count the average score to be displayed. i should do it with arrays but i do not know how, i need someone to guide me. Thank you in advance

var info = PFQuery(className: "score")
    info.whereKey("player_name", equalTo: player!)
    info.findObjectsInBackgroundWithBlock{

        (objects, error) -> Void in
        if error == nil {

            for me in objects! {

                var mine = me.objectForKey("score")
                print(score)


            }

        }else {

            print(error)
        }
    }

}

Upvotes: 0

Views: 274

Answers (3)

hamdi islam
hamdi islam

Reputation: 1521

finally i've found the answer, in case anyone wonder how

var sum = 0

            for me in objects! {
                sum += me.objectForKey("score") as! Int
                var number = info.countObjects()
                var average = sum / number
                print(average)
            }

Upvotes: 0

Alexander Li
Alexander Li

Reputation: 791

This should work. Just finding the average the old fashioned way.

var sum = 0

for me in objects! {
    sum += me.objectForKey("score") as! Int
}

let  avg : Double = Double(sum) / Double(numbers.count)`

Upvotes: 0

vadian
vadian

Reputation: 285072

It should work with the key value coding collection operator @avg, just

let averageScore = objects!.valueForKeyPath("@avg.score")

no repeat loop needed.

Upvotes: 2

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