RxSwift Driver

RxSwiftのDriverについてpotatotips #28で発表した際のスライドです http://connpass.com/dashboard/

Transcript

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2. ࣗݾ঺հ
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   w גࣜձࣾωΫετͰɹɹ)0.&`4ͱ͍͏

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3. %SJWFSͱ͸ʁ
   

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5. υΩϡϝϯτ͔Β஌Δ
   

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9. $PEF3FBEJOH
   

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10. validatedUsername = input.username
    .flatMapLatest { username in
    return validationService.validateUsername(username)
    .observeOn(MainScheduler.instance)
    .catchErrorJustReturn(.Failed(message: "Error contacting server"))
    }
    .shareReplay(1)
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11. func validateUsername(username: String) -> Observable {
    if username.characters.count == 0 {
    return Observable.just(.Empty)
    }
    // this obviously won't be
    if username.rangeOfCharacterFromSet(NSCharacterSet.alphanumericCharacterSet().invertedSet) != nil {
    return Observable.just(.Failed(message: "Username can only contain numbers or digits"))
    }
    let loadingValue = ValidationResult.Validating
    return API
    .usernameAvailable(username)
    .map { available in
    if available {
    return .OK(message: "Username available")
    }
    else {
    return .Failed(message: "Username already taken")
    }
    }
    .startWith(loadingValue)
    }
    

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12. enum ValidationResult {
    case OK(message: String)
    case Empty
    case Validating
    case Failed(message: String)
    }
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13. validatedUsername = input.username
    .flatMapLatest { username in
    return validationService.validateUsername(username)
    .asDriver(onErrorJustReturn: .Failed(message: "Error contacting server"))
    }
    %SJWFSύλʔϯ
    

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14. validatedUsername = input.username
    .flatMapLatest { username in
    return validationService.validateUsername(username)
    .asDriver(onErrorJustReturn: .Failed(message: "Error contacting server"))
    }
    ൺֱ
    validatedUsername = input.username
    .flatMapLatest { username in
    return validationService.validateUsername(username)
    .observeOn(MainScheduler.instance)
    .catchErrorJustReturn(.Failed(message: "Error contacting server"))
    }
    .shareReplay(1)
    

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15. validatedUsername = input.username
    .flatMapLatest { username in
    return validationService.validateUsername(username)
    .asDriver(onErrorJustReturn: .Failed(message: "Error contacting server"))
    }
    validatedUsername = input.username
    .flatMapLatest { username in
    return validationService.validateUsername(username)
    .observeOn(MainScheduler.instance)
    .catchErrorJustReturn(.Failed(message: "Error contacting server"))
    }
    .shareReplay(1)
    ൺֱ
    

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16. όΠϯυ͢Δͱ͖
    

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17. viewModel.validatedUsername
    .bindTo(usernameValidationOutlet.ex_validationResult)
    .addDisposableTo(disposeBag)
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18. viewModel.validatedUsername
    .drive(usernameValidationOutlet.ex_validationResult)
    .addDisposableTo(disposeBag)
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19. ൺֱ
    viewModel.validatedUsername
    .bindTo(usernameValidationOutlet.ex_validationResult)
    .addDisposableTo(disposeBag)
    viewModel.validatedUsername
    .drive(usernameValidationOutlet.ex_validationResult)
    .addDisposableTo(disposeBag)
    

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20. CJOE5Pͷํ͸஫ҙ

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22. ͜͜·Ͱͷ·ͱΊ
    

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25. ݁࿦
    

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26. %SJWFS͸6*ͷͨΊͷ΋ͷ
    

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27. ͓ΘΓ
    

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