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ReactiveCocoa 5.0
@ikesyo
iOSDC Japan 2016
2016-08-20 Sat
#iosdc
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@ikesyo
• ͍͚͠ΐʔʗా ᠳ
• ͯͳ@ژ
• https://twitter.com/ikesyo
• https://github.com/ikesyo
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RAC 5.0
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RAC 5.0
• Repository Split
• API Design
• Signal
• SignalProducer
• Properties
• Atomic
• Others
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Repository Split
• ReactiveCocoa: ReactiveSwift + UI layers
• ReactiveSwift: The core, platform-independent Swift APIs
• ReactiveObjC: Objective-C APIs (e.g. RACSignal)
• ReactiveObjCBridge: Swift <-> ObjC bridging layer
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API Design
• Swift 3 API Design Guidelines:
• #3001 [5.0] Swift 3.0 Groundwork
• #3028 Isolate unavailable APIs in 5.0.
• Easier transition by the use of "@available(*,
unavailable, renamed:..."
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Signal
• Lifetime Semantics:
• #2959 [5.0] Changes to the lifetime semantic of Signal.
• ϝϞϦʔorϦιʔεϦʔΫ͕ͪ͠ͳͷΛղফ
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SignalProducer
• SignalProducer.buffer is removed:
• #3028 Isolate unavailable APIs in 5.0.
• Use Properties or SignalProducer.replayLazily instead
• SignalProducer.on:
• #3097 Pre- and post-start hooks in SignalProducer.on.
• started -> starting, started ʹׂ
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Properties
• #3023 Unifying read-only properties, and making
PropertyProtocol class bound.
• Renamed PropertyProtocol is now class bound
• AnyProperty -> Property
• ConstantProperty -> Property(value:)
• #2922 Property composition operators.
• Signal, SignalProducerͱಉͷΦϖϨʔλʔͷՃ
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Atomic
• Optimizations:
• #2984 Adopt inout parameter in Atomic.modify.
• #3123 Alter Atomic.modify to return the result of the
supplied action.
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Others
• #3030 Add Lifetime to enable observation of object
deallocation in Swift
class MyController {
private let token = Lifetime.Token()
var lifetime: Lifetime { return Lifetime(token) }
func viewDidLoad() {
super.viewDidLoad()
fooBarProducer()
.take(until: lifetime.ended) // .take(until: rac_lifetime.ended)
.startWithNext { ... }
}
}
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Others
• #3133 Generic ScopedDisposable
// Generic ScopedDisposable
class ScopedDisposable: Disposable { ... }
class MyController {
private let disposable = ScopedDisposable(CompositeDisposable())
func viewDidLoad() {
super.viewDidLoad()
disposable += fooBarProducer().startWithNext { ... }
// disposable.innerDisposable.add(fooBarProducer().startWithNext { ... })
}
}
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! Happy Reactive Coding!! !
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Thank you❗"