Scala - mutable (var) method parameter reference

Question

EDIT: I keep getting upvotes here. Just for the record, I no longer think this is important. I haven\'t needed it since I posted it.

I would like to do following in

Answer 1

String objects are immutable in Scala (and Java). The alternatives I can think of are:

1. Return the result string as return value.
2. Instead of using a String parameter, use a StringBuffer or StringBuilder, which are not immutable.

In the second scenario you would have something like:

def save(srcPath: String, destPath: StringBuilder) {
    if (!destPath.toString().endsWith("/"))
       destPath.append("/")
    // do something
    //
}

EDIT

If I understand correctly, you want to use the argument as a local variable. You can't, because all method arguments are val's in Scala. The only thing to do is to copy it to a local variable first:

def save(srcPath: String, destPath: String) {
    var destP = destPath
    if (!destP.endsWith("/"))
       destP += "/"
    // do something
    //
}