Compile and Execute Swift Online

import Foundation

struct LinkedList<Value> {
    
    var head : Node<Value>?
    var tail : Node<Value>?
    
    
    init() {}
    
    func isEmpty() -> Bool {
        return head == nil
    }
    
   mutating func push(_ value: Value) {
        
        head = Node(value: value, next: head)
        
        if tail == nil {
           tail = head
        }
    }
    
    mutating func append(_ value : Value)
    {
        
    }
    
}
 
 class Node<Value> {
     
     var value :Value
     var next : Node?
     
     init(value:Value, next:Node? = nil )
     {
         self.value = value
         self.next = next
     }
 }
 
 
 extension LinkedList : CustomStringConvertible {
     
     var description : String {
         
         guard let head = head else {
            return " Empty List"    
         }
         
         return String(describing: head)
         
     }
     
 }
 
 
 extension Node : CustomStringConvertible {
     
     var description : String {
         guard let next = next else {
             return "\(value)"
         }
         return "\(value) -> " + String(describing : next) + " "
         
     }
 }
 
var list = LinkedList<Int>();
list.push(1)
list.push(2)
list.push(3)
list.push(5)
 
 print(list)