Visibility issue with a private Scala method

Question

I have the following snippet of Scala code, part of a larger source file with more classes, which comprises of private field, method and public method:

class Grid {

  private val cells = Vector(
    Vector(new Cell, new Cell, new Cell),
    Vector(new Cell, new Cell, new Cell),
    Vector(new Cell, new Cell, new Cell)
  )



 private def tranpose(grid:Vector[Vector[Cell]]) : Vector[Vector[Cell]] = {
    val newgrid = Vector(
      Vector(grid(0)(0), grid(1)(0), grid(2)(0)),
      Vector(grid(0)(1), grid(1)(1), grid(2)(1)),
      Vector(grid(0)(2), grid(1)(2), grid(2)(2))
      )
    newgrid
     }

  // Determine winner or draw
    def wins(symbol:Char):Boolean  = {
       val fullvec = Vector(symbol, symbol, symbol)
       for(r<-cells)
          if(r.equals(fullvec))
            true

        // Transpose the grid into a new one and make the same check again
        val transpgrid = transpose(cells)
        for(r<-transpgrid)
           if(r.equals(fullvec))
             true

        // Now check diagonals
        val maindiag = Vector(cells(0)(0), cells(1)(1), cells(2)(2))
        val seconddiag = Vector(cells(0)(2), cells(1)(1), cells(2)(0))
        if(maindiag.equals(fullvec) || seconddiag.equals(fullvec)) 
           true
         false
    }

In the line of code val transpgrid = transpose(cells) inside the wins method, scala gives me the following message:

jasonfil@hp ~/AtomicScala/examples $ scala TicTacToe.scala 
TicTacToe.scala:69: error: not found: value transpose
    val transpgrid = transpose(cells)

I have tried adding the keyword this in front of the call to transpose, yet I have had no luck. I'm new to the language and presume I'm making some kind of mistake at call-time.

// Edit: I have since flagged this post for moderator approval and deletion, since it's obvious that I wasn't paying enough attention in creating the minimal example (obvious typo). However, I have since realized that another thing wrong with this code of mine is the liberal non-use of the "return" keyword from areas of the code that are clearly not the last line of their respective methods. This caused me a lot of heartache yesterday, yet I learnt from said heartache.

Answer 1

You have a spelling error - private def tranpose should be private def transpose