Guard Let statement not triggering even when values are nil

Question

Here is a UIBarButtonItem I have:

@IBAction func doneButtonPressed(_ sender: UIBarButtonItem) {
    print("doneButton Pressed")
    // Guard statement ensures that all fields have been satisfied, so that the JumpSpotAnnotation can be made, and no values are nil
    guard let name = nameTextField.text,
        let estimatedHeight = estimatedHeightTextField.text,
        let locationDescription = descriptionTextView.text else {
            nameRequiredLabel.isHidden = false
            heightRequiredLabel.isHidden = false
            descriptionRequiredLabel.isHidden = false
            print("User did not put in all the required information.")
            return
           }

The code below it in the IBAction is irrelevant since this is a guard let problem. It won't trigger even when I literally set the values to nil. In my viewDidLoad I put:

    nameTextField.text = nil
    estimatedHeightTextField.text = nil
    descriptionTextView.text = nil

And when I press the button, without changing the values of these texts, the guard let statement still doesn't trigger, and the rest of the function below executes. Any ideas why? Thanks.

Answer 1

If you are just checking that the text field is empty then you can do something like:

guard 
    let estimatedHeight = estimatedHeightTextField.text, 
    !estimatedHeight.isEmpty, 
    let locationDescription = descriptionTextView.text,
    !locationDescription.isEmpty 
    else {
        nameRequiredLabel.isHidden = false
        heightRequiredLabel.isHidden = false
        descriptionRequiredLabel.isHidden = false
        print("User did not put in all the required information.")
        return
    }

Checkout out this answer: https://stackoverflow.com/a/24102758/12761873