SwiftUI

To create custom modifier, the newly created struct needs to confirm ViewModifier protocol. It only needs body method. It needs to return someView.

Dispatch UI updates on the main queue automatically using MainActorswift5.5.when using Swift’s new concurrency system : await/asyncBut what if we’re

Opaque TypesProtocol 로 return 표할때 some keyword.자동차는 suv, normal 등등 있다.(이때 protocol return 유리)Some = Some kind of .. 의미.= hiding exact information= cod