본 내용은 Swift 공식 문서에 기반하여 작성되었습니다. https://docs.swift.org/swift-book/LanguageGuide/TheBasics.html The Basics — The Swift Programming Language (Swift 5.3) The Basics Swift is a new programming language for iOS, macOS, watchOS, and tvOS app development. Nonetheless, many parts of Swift will be familiar from your experience of developing in C and Objective-C. Swift provides its own versions of all fu..