Medium blogpost snippet

Toggle.swift

func manage(change: Observable<Bool>) -> (value: Driver<ToggleValue>, isBusy: Driver<Bool>) {
    // ...
  
    let storage = self.storage
  
    let valueAfterSaving = change
        .flatMap { valueToSave -> Observable<ToggleValue> in
            storage
                .save(value: valueToSave)
                .map { ToggleValue.updated(valueToSave) }
                .catchErrorJustReturn(ToggleValue.fallback(!valueToSave))
        }

    // ...
}