Learn Dart #5: Read and write files in under 30 seconds

read-and-write-files.dart

import 'dart:io';

main() async {
  var file = File('data.txt');
  var contents;

  if (await file.exists()) {
    // Read file
    contents = await file.readAsString();
    print(contents);

    // Write file
    var fileCopy = await File('data-copy.txt').writeAsString(contents);
    print(await fileCopy.exists());
    print(await fileCopy.length());
  }
}

Full article and video here: https://dev.to/graphicbeacon/learn-dart-5-read-and-write-files-in-under-30-seconds-2bii