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class SomeActivity: AppCompatActivity(){

  fun saveAThing(thing: String){
        File(this.filesDir, "things.txt").bufferedWriter().use { out ->
            out.write(thing)
        }
        
  fun openThings(){
        var printText = ""

        File(this.filesDir, "things.txt").bufferedReader().forEachLine { line ->
            printText += line
        }
        
        println(printText)
    }

}