I have this code running fine but then it shows too much information and I only want the last line in the code.

Code here:

import scala.io.Source

object CovidWorld {
  def main(args: Array[String]): Unit = {
    val filename = Source.fromFile("OOPAssignment3.txt")


    try{
        for (line <- filename.getLines.toList) {
            if (line.contains("Malaysia") && line.split(",").apply(7).nonEmpty) {
                val allDeathString: String = line.split(",").apply(7)
                print("\n\n Malaysia latest total amount of death: "   allDeathString)
            }
        }
    }
    finally{
        filename.close
        //print("\nThe file is now closed")
        }
    }
}

This is the result I obtain from it.result of the running code

I just want the last line of the information instead of the entire thing. Anyone can figure out how? Thanks in advance for the help :)

CodePudding user response：

You can replace the inside of your try block with:

 filename
      .getLines
      .filter(line => line.contains("Malaysia") && line.split(",").apply(7).nonEmpty)
      .toList
      .takeRight(1)
      .foreach(line => {
        val allDeathString: String = line.split(",").apply(7)
        print("\n\n Malaysia latest total amount of death: "   allDeathString)
      })

The key part for your purposes is takeRight which selects n elements from the end of the list. When n == 1 you're taking only the last match which is what you want here.