future1 비동기처리 main() { printGreeting('World'); printGreeting('Dart'); printGreeting('Flutter'); print('step 1'); print('step 2'); print('step 3'); print('end'); } Future printGreeting(String s) async { var greetingString = await getGreeting(s); print(greetingString); } getGreeting(String s) { return 'Hello $s !!'; } step 1 step 2 step 3 end Hello World !! Hello Dart !! Hello Flutter !! printGreeting() 처리 절차 1.. 2022. 6. 20. 이전 1 다음