Why can't a variable be a stable identifier?

Question

The following

def mMatch(s: String) = {
    var target: String = \"a\"
    s match {
        case `target` => println(\"It was \" + target)
        case _         


        

Answer 1

There's nothing to stop you just turning your var into a val before using it in the match:

def mMatch(s: String) = {
    var target: String = "a"
    val x = target
    s match {
        case `x` => println("It was " + target)
        case _ => println("It was something else")
    }
}

works perfectly fine.