WWDC

https://developer.apple.com/documentation/swiftui/managing-model-data-in-your-appyou should also try to limit the number of sources of truth to c

WWDC 2021 Async/awaitCompletion handler 보다 쉽게 async 처리할 수 있도록 만든것. + safer + shorter경험: string->uiImage 할때 urlrequest, datatask, 변환 과정. 이중에 사실 request