You need to be more precise when you write code. Your array of integers has a different number than the example output you want. I thought perhaps you wanted a set for a response, but there were two fails in there, so I ruled that out, too. Another source of imprecision are the ranges you … Read more
Does this return what you want? [[1,2] , [3,7] , [2,9] , [10,19]].sorted(by: {$0[0]<$1[0]}) 3 solved Is there a way to sort an array by a subarray’s index in Swift?
I had a similar app to be built some time ago, and I also tried things like you did, but that is very very wrong way to use timer and all to record your location. First of all, I suggest you to not try to record/ping location explicitly because, it will cause batter drainage. There … Read more
It would be helpful to see what you’ve tried to give some advice, but nonetheless, you can use NSCalendar’s components to accomplish this. let calendar = Calendar.current let startOfDay1 = calendar.startOfDay(for: date1) let startOfDay2 = calendar.startOfDay(for: date2) let components = calendar.dateComponents([.day], from: startOfDay1, to: startOfDay2) You can customize that above to get more specific minutes … Read more
Let’s step through your code. First, you overwrite whatever the high score was with 0: //To save highest score let highscore = 0 let userDefaults = NSUserDefaults.standardUserDefaults() NSUserDefaults.standardUserDefaults().setObject(highscore, forKey: “highscore”) NSUserDefaults.standardUserDefaults().synchronize() Then, you’re checking if “highscore” is in the defaults: if let highscore: AnyObject = userDefaults.valueForKey(“highscore”) { A few notes: This will always be true … Read more
Your constraints are likely not behaving like you expect. My strong suggestion is to use a UIStackView instead, and bind it to the scroll view via constraints, but not your images. let stackView = UIStackView() stackView.axis = .vertical stackView.spacing = 8 // or whatever you want stackView.addArrangedSubview(image1) stackView.addArrangedSubview(image2) scrollView.addSubview(stackView) stackView.translatesAutoresizingMask = false // finish the … Read more
You should use if let or guard let. if let name1 = names[“1”] { print(name1) } OR guard let name1 = names[“1”] else { return } print(name1) solved How to get the direct value associated with a key in a dictionary in Swift?
Just check if the profile shown is yours and disable follow button… solved Data Structure for Segue?
You first have to create a UITable and implement the delegate methods together with a custom class that will act as cell for the UITable if you dont want the the deafult behaviour of the class. For passing the data to the details you will use something called the segue you can have a look … Read more
This does not represent the entire data, I left some work for you ? Please read the JSON carefully, all dictionaries ({}) can be decoded into a struct, all values in double quotes are String, floating point numeric values are Double, the other Int, the Int dates starting with 1523… can be decoded to Date … Read more
Your code does not compile. sender is Any, so you can’t access the property titleLabel directly. You either have to write: guard let senderedText = (sender as? UIButton)?.titleLabel?.text else { return } Or change the parameter type: @IBAction func inputformula(_ sender: UIButton) { As you can see, I inferred sender to be a UIButton because … Read more
How to add a new list of information to Firebase’s firestore so all users can see it the next time they open the app? [closed] solved How to add a new list of information to Firebase’s firestore so all users can see it the next time they open the app? [closed]
If the array could be empty this is a safe way if myarray.first?.isRunning == true { or (also safe) if !myarray.isEmpty, myarray[0].isRunning { If the array is never empty then your bad way is good. 0 solved Read the first index of array for checking a boolean [closed]
A Closed Range contains both its lower bound and its upper bound. So even if you wrote: let someRange = 0…0 It still contains one element: 0. How would you attempt write an empty range? let someRange = … ?? That doesn’t make much sense, and if you specify either the upper or lower bound, … Read more
Simple and precise: var isHdrVideo = false let pVideoTrack = AVAsset(url: URL(fileURLWithPath: assetURL!)) if #available(iOS 14.0, *) { let tracks = pVideoTrack.tracks(withMediaCharacteristic: .containsHDRVideo) for track in tracks{ isHdrVideo = track.hasMediaCharacteristic(.containsHDRVideo) if(isHdrVideo){ break } } } solved How to tell if a video is HDR or not in Swift?