String Concatenation

String Concatenation

The + operator joins strings together, and Scala automatically converts non-string operands to their string form when one side is already a String. While + works fine for simple cases, string interpolation is generally preferred for building strings with multiple embedded values, since it's more readable. Both approaches ultimately produce a new immutable String.

Note: For more than a couple of concatenated pieces, string interpolation (s"...") reads more clearly than chained + operators.

Example: String Concatenation

object Main extends App {
  val first = "Hello"
  val second = "Scala"
  val combined = first + ", " + second + "!"

  println(combined)
  println("Count: " + 42)
}