While the user is entering the credit card number, I want to star a certain part of the text field as above for security. How can I do it?

i have a text field delegate method my use cases are :- if (.) dot is not there limit input to two characters because 100% should not be discount. if user input is 1.99 how can update the delegate m...

i want to remove one last character when user presses the backspace func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> B...

I'm trying to autocomplete emails. I've done the autocomplete part, but I want to use some properties in strings. For example, after typing the user's e-mail address and making @g, I want to show a di...