make app icon
make app icon
Beginning and Intermediate Core Data – YouTube
original source : https://www.youtube.com/playlist?list=PL23Revp-82LImHA8jL2dLaN_67pABFcyJ
core data 기초 중급 강좌 플레이 리스트
Beginning and Intermediate Core Data – YouTube
original source : https://www.youtube.com/playlist?list=PL23Revp-82LImHA8jL2dLaN_67pABFcyJ
core data 기초 중금 강좌 플레이 리스트
original source : https://www.youtube.com/watch?v=0kmQA0aBIfM&index=14&list=PL23Revp-82LImHA8jL2dLaN_67pABFcyJ
core data stack을 보통 app delegate부분에서 초기화작업을 하는데 이런경우 복잡해지고 다른 프로젝트에서 사용이 불가능하므로 따로 초기화 작업을 하는 class를 만드는 작업을 설명한다.
original source : https://www.youtube.com/watch?v=0kmQA0aBIfM&index=14&list=PL23Revp-82LImHA8jL2dLaN_67pABFcyJ
core data stack을 보통 app delegate부분에서 초기화작업을 하는데 이런경우 복잡해지고 다른 프로젝트에서 사용이 불가능하므로 따로 초기화 작업을 하는 class를 만드는 작업을 설명한다.
Swift 4: Discardable Result – Patrick – Medium
original source :https://medium.com/@patrickbdev/swift-3-discardable-result-c45ab49c76ef
Swift 4: Discardable Result

Swift 2.2
In Swift 2.2, if you called a function and didn’t use its returned result you would receive no warning. To generate a warning the method definition itself would need to be annotated with:
@warn_unused_result
i.e.
@warn_unused_result func add(a: Int, b: Int) -> Int { return a + b }
which produces the following warning when used:

Swift 3 and Swift 4
This behaviour has been flipped around in Swift 3 and Swift 4 where now any unused returned results generate a warning. If you’re designing an API and certain function return values should more so be treated as side effects you can annotate the function with:
@discardableResult
i.e.
@discardableResult func add(a: Int, b: Int) -> Int { return a + b }