Several ways to write text to file

TextPrinter.scala

def using[A <: {def close(): Unit}, B](res: A)(op: A => B): B = try op(res) finally res.close

def writeToFile(path: String, data: String): Unit = 
  using(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(path), "UTF-8")))(_.write(data))

def appendToFile(path: String, data: String): Unit =
  using(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(path, true), "UTF-8")))(_.write(data))
  
def printToFile(path: String)(op: PrintWriter => Unit): Unit = 
  using(new PrintWriter(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(path), "UTF-8"))))(op)

//Example usage: 
printToFile("filename")(p => {List("line1","line2","line3").foreach(p.println)})

/**
 * One-liners to write a line
 * */
import sys.process._; "echo Hello world!" #> new java.io.File("filename") ! // works only in *nix

Some(new java.io.PrintWriter("filename", "UTF-8")).foreach{ p => try p.write("text") finally p.close }
/**
 * Make it reusable
 * */
def saveText(filename: String, text: String): Unit = {
  val pw = java.io.PrintWriter(new java.io.File(filename), "UTF-8")
  try pw.write(text) finally pw.close
}
/**
 * More general way to do it
 * */
def printToFile(filename: String)(op: java.io.PrintWriter => Unit) {
  val p = new java.io.PrintWriter(new java.io.BufferedWriter(new java.io.FileOutputStream(filename), "UTF-8"))
  try op(p) finally p.close
}
// Example usage:
printToFile("filename")(p => { List("line1","line2","line3").foreach(p.println) })