2020-07-19 06시 개발자 글 모음 | "Monad Transformer In" 외 1개 이야기

행복불감증에 대한 고찰 by 이하제

---

Monad Transformer In Scala by 권태국

• def getBestFriendOfUser ( userId : String ) : Future [ Option [ User ] ] = for { userOpt <- getUser ( userId ) bestFriendIdOpt = userOpt
• successful ( None ) ) } ) } def getBestFriendOfUser ( userId : String ) : Future [ Option [ User ] ] = ( for { user <- FutureOption ( getUser ( userId ) ) bestFriend <- FutureOption ( getUser ( user
• pure ( None ) ) } ) } def getBestFriendOfUser ( userId : String ) : Future [ Option [ User ] ] = ( for { user <- OptionT ( getUser ( userId ) ) bestFriend <- OptionT ( getUser ( user

---