generics - What is going wrong with my variadic initializer in Swift? -


i created class initializer takes variadic parameter doesn't supposed do. created variable called start reference storted property untereselement. somehow stays "nil" though assign different values. going on here?

class element<t> {     var content: t     var next: element<t>?      init (_ content: t) {         self.content = inhalt     } }  class linkedlist<t> {     var lowestelement: element<t>?      var isempty: bool {         return lowestelement == nil     }      init (firstelement: t) {         lowestelement = element (firstelement)     }      init (_ elements: t...) {         var start = lowestelement          element in elements {             start = element (element)             start = start!.next         }     } }  var list1 = linkedlist (5, 91, 20, 3, 60)  print ("\(liste1.lowestelement?.content)")

there mistake in iteration. assigning values start, start never stored.

set lowestelement , keep temporary pointer current element can assign next attribute next current element.

class element<t> {      var content: t     var next: element<t>?      init (_ content: t) {         self.content = content     }  }  class linkedlist<t> {      var lowestelement: element<t>?      var isempty: bool {         return lowestelement == nil     }      init (firstelement: t) {          lowestelement = element(firstelement)      }      init (_ elements: t...) {          var current : element<t>!          element in elements {              if lowestelement == nil {                 lowestelement = element(element)                 current = lowestelement!             } else {                 let next = element(element)                 current.next = next                 current = next             }         }     } }  var list1 = linkedlist (5, 91, 20, 3, 60)  print ("\(list1.lowestelement?.content)")

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