complexRx.swift

//캐릭터 변경, 넽 변경 에 따른 홈-전체 리로드
        guard let reachabilityObservable = try? DefaultReachabilityService.shared().reachability.asObservable() else {
            return
        }
        
        Observable.combineLatest(UserDataManager.shared.currentCharacter, reachabilityObservable, viewModel.currentTabEditEvent.startWith(nil))
            .distinctUntilChanged({ (lhs, rhs) -> Bool in
                return lhs.2 != rhs.2 || lhs.1.reachable != rhs.1.reachable || lhs.0 != rhs.0
            })
            .map { [weak self] args -> (CharacterType?, ReachabilityStatus, RxTimeInterval) in
                guard let self = self else { return (args.0, args.1, 0.0)}
                
                let delay = RxTimeInterval(self.editSection == nil ? 0.0 : 0.75)
                self.editSection = args.2
                
                return (args.0, args.1, delay)
            }
            .flatMapFirst { args -> Observable<(CharacterType?, ReachabilityStatus)> in
                //let delay = self.editSection == nil ? 0 : 0.75
                Log.d(">>>>>>>>>>>>> reloadSectionsDelay = \(args.2), \(Date().debugDescription)")
                return Observable.just((args.0, args.1)).delaySubscription(RxTimeInterval(args.2), scheduler: MainScheduler.instance)
            }
            .observeOn(MainScheduler.instance)
            .subscribe(onNext: { [weak self] _, reachabilityStatus in
                guard let self = self else { return }
                
                //self.editSection = nil
                self.reachable = reachabilityStatus.reachable
                
                self.pageViewController.dataSource = self.hasSession ? self : nil   //prevent gesture on pageViewController
                self.currentSection = self.sectionSources.firstObject   //set first viewcontroller on array
            })
            .disposed(by: disposeBag)