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Mutable Linked List in Scala


Scala list foldingIdeal FP/Scala way to vaildate rectangular listSingly linked list implementation in ScalaScala list to tuple conversionDivide list into n parts in scalaCheck if a linked list is a palindrome in ScalaSingly linked list in ScalaImplementation of linked list in ScalaScala tic-tac-toe no mutable stateFixed size double linked list in Scala













0












$begingroup$


Scala newbie here. I'm trying to implement a mutable linked list in Scala. So far, I am only supporting the add() operation. Here's my stab at it:



class MutableList[T] 

class Node[T](val value: T)
var next: Node[T] = null
def hasNext = (next != null)


var first, last: Node[T] = null
var size = 0

def add(value: T) =
val newNode = new Node[T](value)
if (first == null)
assert(size == 0)
first = newNode
last = newNode
else
last.next = newNode

size += 1


override def toString =
def getValues() =
var current = first
for (i <- 1 to size) yield
val valStr = current.value.toString
current = current.next
valStr


getValues().mkString(",")




I know that a mutable data structure is not the best thing to use/implement in Scala. But I'm just experimenting and was wondering if there is a more functional Scala way of writing this?









share







New contributor




Aashish Dattani is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$
















    0












    $begingroup$


    Scala newbie here. I'm trying to implement a mutable linked list in Scala. So far, I am only supporting the add() operation. Here's my stab at it:



    class MutableList[T] 

    class Node[T](val value: T)
    var next: Node[T] = null
    def hasNext = (next != null)


    var first, last: Node[T] = null
    var size = 0

    def add(value: T) =
    val newNode = new Node[T](value)
    if (first == null)
    assert(size == 0)
    first = newNode
    last = newNode
    else
    last.next = newNode

    size += 1


    override def toString =
    def getValues() =
    var current = first
    for (i <- 1 to size) yield
    val valStr = current.value.toString
    current = current.next
    valStr


    getValues().mkString(",")




    I know that a mutable data structure is not the best thing to use/implement in Scala. But I'm just experimenting and was wondering if there is a more functional Scala way of writing this?









    share







    New contributor




    Aashish Dattani is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.







    $endgroup$














      0












      0








      0





      $begingroup$


      Scala newbie here. I'm trying to implement a mutable linked list in Scala. So far, I am only supporting the add() operation. Here's my stab at it:



      class MutableList[T] 

      class Node[T](val value: T)
      var next: Node[T] = null
      def hasNext = (next != null)


      var first, last: Node[T] = null
      var size = 0

      def add(value: T) =
      val newNode = new Node[T](value)
      if (first == null)
      assert(size == 0)
      first = newNode
      last = newNode
      else
      last.next = newNode

      size += 1


      override def toString =
      def getValues() =
      var current = first
      for (i <- 1 to size) yield
      val valStr = current.value.toString
      current = current.next
      valStr


      getValues().mkString(",")




      I know that a mutable data structure is not the best thing to use/implement in Scala. But I'm just experimenting and was wondering if there is a more functional Scala way of writing this?









      share







      New contributor




      Aashish Dattani is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.







      $endgroup$




      Scala newbie here. I'm trying to implement a mutable linked list in Scala. So far, I am only supporting the add() operation. Here's my stab at it:



      class MutableList[T] 

      class Node[T](val value: T)
      var next: Node[T] = null
      def hasNext = (next != null)


      var first, last: Node[T] = null
      var size = 0

      def add(value: T) =
      val newNode = new Node[T](value)
      if (first == null)
      assert(size == 0)
      first = newNode
      last = newNode
      else
      last.next = newNode

      size += 1


      override def toString =
      def getValues() =
      var current = first
      for (i <- 1 to size) yield
      val valStr = current.value.toString
      current = current.next
      valStr


      getValues().mkString(",")




      I know that a mutable data structure is not the best thing to use/implement in Scala. But I'm just experimenting and was wondering if there is a more functional Scala way of writing this?







      scala





      share







      New contributor




      Aashish Dattani is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.










      share







      New contributor




      Aashish Dattani is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.








      share



      share






      New contributor




      Aashish Dattani is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      asked 1 hour ago









      Aashish DattaniAashish Dattani

      1




      1




      New contributor




      Aashish Dattani is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.





      New contributor





      Aashish Dattani is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      Aashish Dattani is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.




















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