Fredshawnayvonne's Profile

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13

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11

  • Asked on August 31, 2020 in Swift.

    Hi you need to subscribe on editing changed  How to check if the field is empty? let textField = UITextField() textField.addTarget(self, action: #selector(textChanged), for: .editingChanged)

    @objc func textChanged () {     if textField.text == "" || textField.text == nil {         print("IS EMPTY")     } else {         print("NON EMPTY")     } } 

    How to set max length to UITextField

    class ViewController: UIViewController, UITextFieldDelegate {          override func viewDidLoad() {         let textField = UITextField()         textField.delegate = self     }              func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {         guard let textFieldText = textField.text,             let rangeOfTextToReplace = Range(range, in: textFieldText) else {                 return false         }         let substringToReplace = textFieldText[rangeOfTextToReplace]         let count = textFieldText.count - substringToReplace.count + string.count         return count <= 5     }      } 
    • 13 views
    • 1 answers
    • 0 votes
  • So I am not completely satisfied with this answer, however it is a work around for what I need.

    What I have done is added two variables ‘touchesStart’ and ‘touchesEnd’ to my tiles class. Then in touchesBegan() I add a call to update touchesStart with CACurrentMediaTime() and update touchesEnd via the touchesEnded() function.

    Then in the touchesEnded() I subtract touchesStart from touchesEnd. If the difference is more than 1.0 I call the function for long press. If less than 1.0 I call the function for tap.

    • 16 views
    • 2 answers
    • 0 votes
  • Asked on August 31, 2020 in iOS.

    So theres a few things you can do.

    1. HLS is apples preferred method of streaming to an apple device. So try to get that as much as possible for iOS devices.

    2. The best practices when it comes to mobile streaming is offering multiple resolutions. The trick is to start with the lowest resolution available to get the video started. Then switch to a higher resolution once the speed is determined to be capable of higher resolutions. Generally this can be done quickly that the user doesn’t really notice. YouTube is the best example of this tactic. HLS automatically does this, not sure about m3U8.

    3. Assuming you are offering a UICollectionView or UITableView, try to start low resolution streams of every video on the screen in the background every time the scrolling stops. Not only does this allow you to do some cool preview stuff based off the buffer but when they click on it the video is already established. If thats too slow try just the middle video.

    4. Edit the video in the background before upload to only be at the max resolution you expected it to be played at. There is no 4k resolution screen resolutions on any iOS device and probably never will be so cut down the amount of data.

    Without getting more specifics this is all I got for now. Hope I understood your question correctly. Good luck!

    • 21 views
    • 1 answers
    • 0 votes
  • Asked on August 31, 2020 in Swift.

    Reference type is not allowed to be a SwiftUI View. We cannot do the following:

    class ViewName: UIView, View {   ... } 

    demo

    , so probably you meant this

    struct ViewName: View {      // ... other properties      @State var time: String = ""      func setTime() {         for place in self.data.places {             if self.representedObject.title == place.address {                 self.time = place.time             }         }     }      var body: some View {        Text("Some View Here")          .onAppear {             self.setTime()      // << here !!          }     }  } 
    • 11 views
    • 1 answers
    • 0 votes
  • Asked on August 31, 2020 in iOS.

    You need

    gmsGeocoder.reverseGeocodeCoordinate((CLLocationCoordinate2DMake(currentLocation.coordinate.latitude, currentLocation.coordinate.longitude))) {        (response, error) in } 
    • 15 views
    • 1 answers
    • 0 votes
  • Asked on August 31, 2020 in .NET.

    It says here that the Flag for the incremental save is ‘1’.

     FPDF_SaveAsCopy(IntPtr, FPDF_FILEWRITE, SaveFlags) 
    • 25 views
    • 1 answers
    • 0 votes
  • Asked on August 31, 2020 in .NET.

    The byte boundaries are easily determined from the bit patterns. In your case, \xc6 starts with the bits 1100, and \xe2 starts with 1110. In UTF-8 (and I’m pretty sure this is not an accident), you can determine the number of bytes in the whole character by looking only at the first byte and counting the number of 1 bits at the start before the first 0. So your first character has 2 bytes and the second one has 3 bytes.

    If a byte starts with 0, it is a regular ASCII character.

    If a byte starts with 10, it is part of a UTF-8 sequence (not the first character).

    • 17 views
    • 1 answers
    • 0 votes
  • Asked on August 31, 2020 in Node.js.

    To state the obvious, the cup represents outerScopeVar.

    Asynchronous functions be like…

    asynchronous call for coffee

    • 17 views
    • 6 answers
    • 0 votes
  • Asked on August 31, 2020 in Node.js.

    Since from the given example one also might need to take single quote characters used as apostrophs into account, I suggest a regex based approach like the following one …

    1. remove leading opening bracket and single quote.
    2. remove trailing single quote and closing bracket.
    3. split at following sequence …
      • single quote, optional white space sequence (OWSS), comma, OWSS, single quote.

    … example …

    const sample = "['rear neck and choke', 'multiple fractures, multiple hairline injuries', 'leukemia','shell's disease']";  /**  *  1. remove leading opening bracket and single quote.  *  2. remove trailing single quote and closing bracket.  *  3. split at following sequence ...  *     - single quote, optional white space sequence (OWSS),  *       comma, OWSS, single quote.  */ console.log(`"${ sample }"`);  console.log(sample   .replace(/^\['/, '')   .replace(/'\]$/, '')   .split(/'\s*,\s*'/g) );

    • 12 views
    • 4 answers
    • 0 votes
    1. try this first before installing node.

       sudo npm cache verify   sudo npm cache clean --force 
    2. After installing verify your installation:

      node –version

    • 12 views
    • 2 answers
    • 0 votes