String Builder Append

Build a small string step by step.

StringBuilderAppend.scala

object Main {
  def main(args: Array[String]): Unit = {
    val count = 
    val builder = new StringBuilder("item")
    builder.append(":")
    builder.append(count)
    val label = builder.toString
    val length = label.length

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

object Main {
  def main(args: Array[String]): Unit = {
    val count = 
    val builder = new StringBuilder("item")
    builder.append(":")
    builder.append(count)
    val label = builder.toString
    val length = label.length

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

object Main {
  def main(args: Array[String]): Unit = {
    val count = 
    val builder = new StringBuilder("item")
    builder.append(":")
    builder.append(count)
    val label = builder.toString
    val length = label.length

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

mutable-builder `StringBuilder` is a standard mutable helper for incremental text construction. Call `toString` when the final immutable string is ready.