[flutter] async/await
동기화/비동기화 예시 #1 const oneSecond = Duration(seconds: 1); Future<void> printWithDelay0(String message) async { await Future.delayed(oneSecond); print(message); } Future<void> printWithDelay1(String message) { Future.delayed(oneSecond) .then((_) { print(message); }); } void main() { printWithDelay0(); for (int i = 0; i < 5; i++) { print('hello ${i + 1}'); } printWithDelay1(); } 결과 #1 hello 1 hello 2 hello 3 hello 4 hello 5 First time... Second tine... 예시 #2 void main() async { await printWithDelay0(); for (int i = 0; i < 5; i++) { print('hello ${i + 1}'); } await printWithDelay1(); } 결과 #2 First time... hello 1 hello 2 hello 3 hello 4 hello 5 Second tine...