Swift || do we possible to detect how many spaces of empty string have?

April 25, 2022

lets say we have an extension of String:

extension String {
  var textBeCleared: Bool {
   // how we write here
  }
}

then:

var demo1 = ""  // no space over here
demo.textBeCleared // true
var demo2 = " " // type one space over here
demo.textBeCleared // false

because I got a sticky issue is: I have a save button at bottom of a text field, save button only displays when removing all text contents in the text field, like demo1. but if type more space over here, like demo2, save button will be hidden.

>Solution :

you could try this:

extension String {
  var textBeCleared: Bool {
      self.isEmpty
  }
}

var demo1 = ""  // no space over here
var demo2 = " " // type one space over here
print(" demo1.textBeCleared: \(demo1.textBeCleared) ") // true
print(" demo2.textBeCleared: \(demo2.textBeCleared) ") // false