title: How to make function that some parameters not required in when call it in iOS Swift 3?
body: <p>I wanna make function without some required parameters like this:  </p>
  
  <pre><code>func myMethod(Name name:String,Age age:Int){
      print(name)
  }
  
  //call
  myMethod(Name:"Donald")
  </code></pre>
  
  <p>Is this can be?</p>