Pattern Matching

Choose a result by matching a value against cases.

PatternMatch.scala

object Main {
  def main(args: Array[String]): Unit = {
    val code = 
    val label = code match {
      case 1 => "one"
      case 2 => "two"
      case 3 => "three"
      case _ => "other"
    }

    println("code=" + code)
    println("label=" + label)
  }
}

object Main {
  def main(args: Array[String]): Unit = {
    val code = 
    val label = code match {
      case 1 => "one"
      case 2 => "two"
      case 3 => "three"
      case _ => "other"
    }

    println("code=" + code)
    println("label=" + label)
  }
}

object Main {
  def main(args: Array[String]): Unit = {
    val code = 
    val label = code match {
      case 1 => "one"
      case 2 => "two"
      case 3 => "three"
      case _ => "other"
    }

    println("code=" + code)
    println("label=" + label)
  }
}

object Main {
  def main(args: Array[String]): Unit = {
    val code = 
    val label = code match {
      case 1 => "one"
      case 2 => "two"
      case 3 => "three"
      case _ => "other"
    }

    println("code=" + code)
    println("label=" + label)
  }
}

pattern-match A `match` expression tests a value against ordered cases and returns the first match. The `_` case is the catch-all default.