seven languages in seven weeks scala day 2

censor.scala

trait Censor {
  val censoredWords = Map("shoot" -> "pucky", "darn" -> "beans")


  def censor(text : String) : String = {
    censoredWords.foldLeft(text)((sum, value) => sum.replaceAll(value._1, value._2))
  }
}


class CensoredText extends Object with Censor {

}

val censor = new CensoredText();
print (censor.censor("shoot the darn thing, or I'll shoot you darn thing"))

censor_from_file.scala

import collection.mutable.HashMap
import collection.parallel.mutable
import io.Source

trait Censor {
  val censoredWords = Source.fromFile("censored-words.txt").getLines()
                         .foldLeft(new HashMap[String, String])((map, line) => {
                            val pair = line.split(':')
                            map += pair(0) -> pair(1)
                         }).toMap


  def censor(text : String) : String = {
    censoredWords.foldLeft(text)((sum, value) => sum.replaceAll(value._1, value._2))
  }
}

class CensoredText extends Object with Censor {

}

val censor = new CensoredText();
print (censor.censor("shoot the darn thing, or I'll shoot you darn thing"))

total_size.scala

val list = List("1", "23", "45", "678", "90");
assert( 10 == list.foldLeft(0)((sum, value) => sum + value.length()))