vialyx · October 7, 2018 16:33
diff --git a/property_observing.swift b/property_observing.swift
 struct Pin {
     
     var value: String {
          willSet {
               print("new pin value: \(newValue)")
          }
          didSet {
               print("old pint value: \(oldValue)")
          }
     }
  
 }
	struct Pin {

	var value: String {
	willSet {
	print("new pin value: \(newValue)")
	}
	didSet {
	print("old pint value: \(oldValue)")
	}
	}

	}