Dart-2 (中文輸入)

Ref: http://ask.make-money-article.com/que/11122732
import 'dart:async';
import 'dart:io';
import 'dart:convert';

void main() {
  readLine().listen(processLine);
}

Stream readLine() => stdin
  .transform(UTF8.decoder)
  .transform(new LineSplitter());

void processLine(String line) {
  print(line);
}