入力を型で表現する

https://potatotips.connpass.com/event/68024/ での発表内容です

1. ೖྗΛܕͰදݱ͢Δ !NPUPLJFF QPUBUPUJQT
   
2. ࣗݾ঺հ w HJUIVC
   UXJUUFS
   !NPUPLJFF
   w ϝϧΧϦι΢κ΢
   J04ΤϯδχΞ
   w ϝϧΧϦ
   Χ΢ϧ
   νʔϜ
   w J04%$
   +BQBO
   
   ελοϑ
4. ʙ
   ອըηοτͷग़඼ɾߪೖʹରԠ
   
5. ग़඼ํ๏  όʔίʔυΛಡΈࠐΉ
 ˠ
   &"/ίʔυ͔Β"1*ܦ༝Ͱ੡඼৘ใΛऔಘ
    λΠτϧ͔Βݕࡧ͢Δ
 ˠ
   ςΩετ͔Β੡඼৘ใΛऔಘʢ6*্ɺ੡඼σʔλ͸औಘࡁʣ
6. %FNP
7. ग़඼ը໘͸ͦͦ͜͜ෳࡶ w ܦ࿏͕ෳ਺ʢ͍·͸͚ͭͩͲʜʣ
   w όʔίʔυಡΈࠐΈ
   w λΠτϧݕࡧ
   w ϓϨʔεϗϧμͷදࣔ
   w ్தͰ੡඼ͷ৘ใ͕੾ΓସΘΔʢອըηοτʣ
8. ෳ਺ͷೖྗΛͭͷܕͰදݱ
9. struct ProactiveExhibit { enum Input: Equatable { case ean(String) case exhibit(BulkIncludeExhibit) } let input: Input } ೖྗͷந৅Խ
10. struct ProactiveExhibit { enum Input: Equatable { case ean(String) case exhibit(BulkIncludeExhibit) } let input: Input } Χϝϥ͔ΒऔಘͰ͖Δ&"/ίʔυ
 ʢ੡඼৘ใऔಘΛ"1*ܦ༝Ͱऔಘʣ
11. struct ProactiveExhibit { enum Input: Equatable { case ean(String) case exhibit(BulkIncludeExhibit) } let input: Input } λΠτϧݕࡧը໘͔Β౉͞ΕΔ੡඼৘ใ
 ʢݕࡧࡁΈͷ੡඼৘ใ͕ͦͷ··౉͞ΕΔʣ
12. let input = Observable .of(scanCamera.barcodeNumber.map { ProactiveExhibit.Input.ean($0) }, exhibitAdapter.map { ProactiveExhibit.Input.exhibit(BulkIncludeExhibit(exhibits: [$0])) } ) .merge() .asDriver(onErrorDriveWith: .empty()) let removeExhibitsInput = Observable .merge(GlobalObservable.removeExhibitsForExhibitCamera, removeExhibitAdapter) .asDriver(onErrorDriveWith: .empty()) let replaceExhibitInput = replaceExhibitAdapter.asDriver(onErrorDriveWith: .empty()) viewModel = ExhibitCameraViewModel(input: input, removeExhibitsInput: removeExhibitsInput, replaceExhibitInput: replaceExhibitInput) Χϝϥ͔Β౉ͬͯ͘Δ&"/ίʔυͷετϦʔϜͱɺ
 λΠτϧը໘͔Β౉͞ΕΔ੡඼σʔλͷετϦʔϜΛNFSHF
 ˠ
    %SJWFS1SPBDUJWF&YIJCJU*OQVU
13. let input = Observable .of(scanCamera.barcodeNumber.map { ProactiveExhibit.Input.ean($0) }, exhibitAdapter.map { ProactiveExhibit.Input.exhibit(BulkIncludeExhibit(exhibits: [$0])) } ) .merge() .asDriver(onErrorDriveWith: .empty()) let removeExhibitsInput = Observable .merge(GlobalObservable.removeExhibitsForExhibitCamera, removeExhibitAdapter) .asDriver(onErrorDriveWith: .empty()) let replaceExhibitInput = replaceExhibitAdapter.asDriver(onErrorDriveWith: .empty()) viewModel = ExhibitCameraViewModel(input: input, removeExhibitsInput: removeExhibitsInput, replaceExhibitInput: replaceExhibitInput) Χϝϥ͔Β౉ͬͯ͘Δ&"/ίʔυͷετϦʔϜ
14. let input = Observable .of(scanCamera.barcodeNumber.map { ProactiveExhibit.Input.ean($0) }, exhibitAdapter.map { ProactiveExhibit.Input.exhibit(BulkIncludeExhibit(exhibits: [$0])) } ) .merge() .asDriver(onErrorDriveWith: .empty()) let removeExhibitsInput = Observable .merge(GlobalObservable.removeExhibitsForExhibitCamera, removeExhibitAdapter) .asDriver(onErrorDriveWith: .empty()) let replaceExhibitInput = replaceExhibitAdapter.asDriver(onErrorDriveWith: .empty()) viewModel = ExhibitCameraViewModel(input: input, removeExhibitsInput: removeExhibitsInput, replaceExhibitInput: replaceExhibitInput) λΠτϧը໘͔Β౉͞ΕΔ੡඼σʔλͷετϦʔϜ
15. let input = Observable .of(scanCamera.barcodeNumber.map { ProactiveExhibit.Input.ean($0) }, exhibitAdapter.map { ProactiveExhibit.Input.exhibit(BulkIncludeExhibit(exhibits: [$0])) } ) .merge() .asDriver(onErrorDriveWith: .empty()) let removeExhibitsInput = Observable .merge(GlobalObservable.removeExhibitsForExhibitCamera, removeExhibitAdapter) .asDriver(onErrorDriveWith: .empty()) let replaceExhibitInput = replaceExhibitAdapter.asDriver(onErrorDriveWith: .empty()) viewModel = ExhibitCameraViewModel(input: input, removeExhibitsInput: removeExhibitsInput, replaceExhibitInput: replaceExhibitInput) ೖྗΛ7JFX.PEFMͷॳظԽ࣌ʹ౉͢
16. 1SPBDUJWF&YIJCJU*OQVUͰ
    දࣔॲཧ΍"1*ϦΫΤετॲཧΛ෼͚Δ
17. let fetchProgress = filteredInput .flatMap { [weak self] input -> Driver<Progress<(ProactiveExhibit.Input, [Exhibit])>> in switch input { case .ean(let ean): let request = ExhibitAPI.FindByEAN(ean: ean) let response = APIClient.shared.response(request) .map { response -> (ProactiveExhibit.Input, [Exhibit]) in return (input, response.elements) } return Progress.makeDriver(response) case .exhibit(let exhibit): return Driver.empty() } } *OQVUFBOͷ৔߹ͷΈϦΫΤετ
18. class ExhibitScannedDisplayViewCell: UICollectionViewCell {
    // লུ
    var proactiveExhibit: ProactiveExhibit? { didSet { if let bulkIncludeExhibit = proactiveExhibit?.bulkIncludeExhibit {
    
    
    
    
    
    
    
    
    
    // ੡඼৘ใදࣔ
    } else {
    
    
    
    
    
    
    
    
    
    // ϓϨʔεϗϧμදࣔ
    } } } } "1*ϦΫΤετ͕ඞཁͳ৔߹ʢFBOʣ͸
 ϓϨʔεϗϧμΛදࣔ͢ΔΑ͏$FMMͰදࣔॲཧ
19. class ExhibitScannedDisplayViewCell: UICollectionViewCell {
    // লུ
    var proactiveExhibit: ProactiveExhibit? { didSet { if let bulkIncludeExhibit = proactiveExhibit?.bulkIncludeExhibit {
    
    
    
    
    
    
    
    
    
    // ੡඼৘ใදࣔ
    } else {
    
    
    
    
    
    
    
    
    
    // ϓϨʔεϗϧμදࣔ
    } } } } ೖྗʹܕΛఆٛ͢Δ͜ͱͰσʔλͦͷ΋ͷͱ͸
 ผͰॲཧ͕Ͱ͖ΔΑ͏ʹͳΔ
20. ෳ਺ͷೖྗΛͭͷܕͰදݱ w σʔλ͚ͩͰͳ͘ೖྗʹ΋ܕΛ
    w σʔλࣗମͷॲཧͱը໘ͷॲཧΛ෼཭͠΍͍͢
    w ೖྗ಺༰ʹΑͬͯॲཧ͕ҟͳΔΑ͏ͳ৔߹ʹ༗ޮ
    w ࠓޙɺೖྗͷόϦΤʔγϣϯ͕૿͑ΔΑ͏ͳ͜ͱ͕͋ͬ ͯ΋ಉ͡ܕͰදݱ͢Δ͜ͱ͕Ͱ͖Δ
    w όϦΤʔγϣϯ͕૿͑ͨࡍ΋ίϯύΠϧΤϥʔ͕ग़Δͷ ͰɺҰͭҰͭରԠ͍͚ͯ͠͹ྑ͍
21. ͓ΘΓ