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© and factory,inc. All Rights Reserved.
ΠϚΠνͳsubscribeΛ
RxΆ͘͢Δ
2019/12/24
͋Δ͋ΔLT Vol.9
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
Yaruki00 @Yaruki00 @Yaruki_00
ล༟ଠ
Yuta Kawabe
J04։ൃྺ͘Β͍
࠷ۙ3YΛͬͨ.77.͕͖
ΫϦεϚεͰࢥ͍ग़͢͜ͱಛʹແ͍
BOEGBDUPSZגࣜձࣾ
J04ΤϯδχΞ
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ݩʹͳͬͨهࣄ
▸ ͍͍Ͷ͍ͩ͘͞ʂ
https://qiita.com/Yaruki00/items/3afb8082f6bff0a9fe90
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© and factory,inc. All Rights Reserved.
subscribeʹ
৭ʑॻ͖͕ͪ
Rxॳ৺ऀ
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ΠϚΠνͳsubscribe
tableView.rx.itemSelected
.subscribe(onNext: { indexPath in
let optionalInt = dataSource?[indexPath.row]
guard let int = optionalInt else {
return
}
if int > 0 {
someObserver.on(.next(int))
}
})
.disposed(by: disposeBag)
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ΠϚΠνͳsubscribe
tableView.rx.itemSelected
.subscribe(onNext: { indexPath in
let optionalInt = dataSource?[indexPath.row]
guard let int = optionalInt else {
return
}
if int > 0 {
someObserver.on(.next(int))
}
})
.disposed(by: disposeBag)
σʔλͷม
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ΠϚΠνͳsubscribe
tableView.rx.itemSelected
.subscribe(onNext: { indexPath in
let optionalInt = dataSource?[indexPath.row]
guard let int = optionalInt else {
return
}
if int > 0 {
someObserver.on(.next(int))
}
})
.disposed(by: disposeBag)
Φϓγϣφϧͷ
Ξϯϥοϓ
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ΠϚΠνͳsubscribe
tableView.rx.itemSelected
.subscribe(onNext: { indexPath in
let optionalInt = dataSource?[indexPath.row]
guard let int = optionalInt else {
return
}
if int > 0 {
someObserver.on(.next(int))
}
})
.disposed(by: disposeBag)
ϑΟϧλϦϯά
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ΠϚΠνͳsubscribe
tableView.rx.itemSelected
.subscribe(onNext: { indexPath in
let optionalInt = dataSource?[indexPath.row]
guard let int = optionalInt else {
return
}
if int > 0 {
someObserver.on(.next(int))
}
})
.disposed(by: disposeBag)
Φϒβʔόʔʹ
ΤϨϝϯτΛૹΔ
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ΠϚΠνͳsubscribe
tableView.rx.itemSelected
.subscribe(onNext: { indexPath in
let optionalInt = dataSource?[indexPath.row]
guard let int = optionalInt else {
return
}
if int > 0 {
someObserver.on(.next(int))
}
})
.disposed(by: disposeBag)
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© and factory,inc. All Rights Reserved.
ॻ͖͑ͯ
͍͖·͢
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
σʔλͷม
tableView.rx.itemSelected
.subscribe(onNext: { indexPath in
let optionalInt = dataSource?[indexPath.row]
guard let int = optionalInt else {
return
}
if int > 0 {
someObserver.on(.next(int))
}
})
.disposed(by: disposeBag)
σʔλͷม
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
σʔλͷม
let optionalInt = dataSource?[indexPath.row]
.map { dataSource?[$0.row] }
func map(_ transform: @escaping (Self.Element)
throws -> Result) -> RxSwift.Observable
લ
ޙ
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ΦϓγϣφϧͷΞϯϥοϓ
tableView.rx.itemSelected
.subscribe(onNext: { indexPath in
let optionalInt = dataSource?[indexPath.row]
guard let int = optionalInt else {
return
}
if int > 0 {
someObserver.on(.next(int))
}
})
.disposed(by: disposeBag)
Φϓγϣφϧͷ
Ξϯϥοϓ
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ΦϓγϣφϧͷΞϯϥοϓ
guard let int = optionalInt else {
return
}
.flatMap { $0.flatMap(Observable.just) ?? .empty() }
func flatMap(_ selector: @escaping (Self.Element)
throws -> Source) -> RxSwift.Observable
where Source : RxSwift.ObservableConvertibleType
લ
ޙ
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ϑΟϧλϦϯά
tableView.rx.itemSelected
.subscribe(onNext: { indexPath in
let optionalInt = dataSource?[indexPath.row]
guard let int = optionalInt else {
return
}
if int > 0 {
someObserver.on(.next(int))
}
})
.disposed(by: disposeBag)
ϑΟϧλϦϯά
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ϑΟϧλϦϯά
if int > 0 { … }
.filter { $0 > 0 }
func filter(_ predicate: @escaping (Self.Element) throws ->
Bool) -> RxSwift.Observable
લ
ޙ
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ΦϒβʔόʔʹΤϨϝϯτΛૹΔ
tableView.rx.itemSelected
.subscribe(onNext: { indexPath in
let optionalInt = dataSource?[indexPath.row]
guard let int = optionalInt else {
return
}
if int > 0 {
someObserver.on(.next(int))
}
})
.disposed(by: disposeBag)
Φϒβʔόʔʹ
ΤϨϝϯτΛૹΔ
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ΦϒβʔόʔʹΤϨϝϯτΛૹΔ
someObserver.on(.next(int))
.bind(to: someObserver)
func bind(to observers: Observer...) ->
RxSwift.Disposable where Observer : RxSwift.ObserverType,
Self.Element == Observer.Element
લ
ޙ
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
Ξϑλʔ
tableView.rx.itemSelected
.map { dataSource?[$0.row] }
.flatMap { $0.flatMap(Observable.just) ?? .empty() }
.filter { $0 > 0 }
.bind(to: someObserver)
.disposed(by: disposeBag)
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
Ξϑλʔ
tableView.rx.itemSelected
.map { dataSource?[$0.row] }
.flatMap { $0.flatMap(Observable.just) ?? .empty() }
.filter { $0 > 0 }
.bind(to: someObserver)
.disposed(by: disposeBag)
σʔλͷม
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
Ξϑλʔ
tableView.rx.itemSelected
.map { dataSource?[$0.row] }
.flatMap { $0.flatMap(Observable.just) ?? .empty() }
.filter { $0 > 0 }
.bind(to: someObserver)
.disposed(by: disposeBag)
Φϓγϣφϧͷ
Ξϯϥοϓ
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
Ξϑλʔ
tableView.rx.itemSelected
.map { dataSource?[$0.row] }
.flatMap { $0.flatMap(Observable.just) ?? .empty() }
.filter { $0 > 0 }
.bind(to: someObserver)
.disposed(by: disposeBag)
ϑΟϧλϦϯά
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
Ξϑλʔ
tableView.rx.itemSelected
.map { dataSource?[$0.row] }
.flatMap { $0.flatMap(Observable.just) ?? .empty() }
.filter { $0 > 0 }
.bind(to: someObserver)
.disposed(by: disposeBag)
ϦϨʔʹ
ΤϨϝϯτΛૹΔ
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ϏϑΥΞ&Ξϑλʔ
tableView.rx.itemSelected
.map { dataSource?[$0.row] }
.flatMap { $0.flatMap(Observable.just) ?? .empty() }
.filter { $0 > 0 }
.bind(to: someObserver)
.disposed(by: disposeBag)
tableView.rx.itemSelected
.subscribe(onNext: { indexPath in
let optionalInt = dataSource?[indexPath.row]
guard let int = optionalInt else {
return
}
if int > 0 {
someObserver.on(.next(int))
}
})
.disposed(by: disposeBag)
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© and factory,inc. All Rights Reserved.
͋Δ͋ΔLT Vol.9 | ΠϚΠνͳsubscribeΛRxΆ͘͢Δ
ศརͳΦϖϨʔλʔͨ͘͞Μ͋Δ
▸ http://reactivex.io/documentation/operators.html
▸ merge
▸ distinct
▸ skip, take
▸ zip
▸ observeOn, subscribeOn
▸ ͳͲͳͲ
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© and factory,inc. All Rights Reserved.
ΦϖϨʔλʔΛ
͍͜ͳͯ͠
ָ͍͠RxϥΠϑΛʂ