Slide 1
Slide 1 text
Recent State of
ReactiveCocoa
@ikesyo
ؔϞόΠϧΞϓϦݚڀձ #13, 2016-04-26 Tue
#ؔϞό
Slide 2
Slide 2 text
@ikesyo
• ͍͚͠ΐʔʗా ᠳ
• Reactiveਓࡐ
• ͯͳ@ژ
• https://twitter.com/ikesyo
• https://github.com/ikesyo
Slide 3
Slide 3 text
✨ Contributions ✨
• ReactiveCocoa
• Carthage (Commandant, ReactiveTask)
• Result
• Himotoki
• APIKit
Slide 4
Slide 4 text
No content
Slide 5
Slide 5 text
Reactive Swift Meetup
• ReactiveCocoaೖ by @Nirma
• Getting Started with ReactiveCocoa v4.1.0 by @inamiy
• Carthage and ReactiveCocoa by @ikesyo
Slide 6
Slide 6 text
No content
Slide 7
Slide 7 text
No content
Slide 8
Slide 8 text
No content
Slide 9
Slide 9 text
No content
Slide 10
Slide 10 text
Recent State of
ReactiveCocoa
Slide 11
Slide 11 text
New Member
• @RuiAAPeres
Issues
• Reduced from around 250 to 80+ (as
of 2016-04-26)
Slide 12
Slide 12 text
No content
Slide 13
Slide 13 text
Moving Rex to the ReactiveCocoa
org #2790
1. Discoverability
2. Credibility
3. Expansion
4. Easier to manage
Slide 14
Slide 14 text
Split Objective-C and Swift APIs
going forward #2807
Correct me if I'm wrong, but maintaining both an Objective-C and Swift API for RAC is a bit of
a burden, right? Perhaps going forward it's worth thinking about slimming ReactiveCocoa
down to just support Swift. I'm sure you guys feel the pull of writing things in Swift as much as I
do !
Obviously there's a lot of people reliant on the Objective-C APIs (myself included, for some
rather large projects) but if there's support for this idea, splitting the language support up into
separate repos/projects might be a good first step?
What do you think?
Slide 15
Slide 15 text
Utilities / Examples
• MailOnline/Reactor
• RuiAAPeres/RACNest
• inamiy/ReactiveCocoaCatalog
• Carthage/Carthage !
Slide 16
Slide 16 text
No content
Slide 17
Slide 17 text
ඇಉظॲཧͷఆܕԽ
• APIຖʹελΠϧ͕ҟͳͬͯ໎Θͳ͍Α͏ʹ͢Δ
• delegate, target-action, callback(Ҿ༷ʑ), ...
• ඇಉظॲཧͷνΣʔϯ
• ! Callback Hell
• flatMap
• flatten
ίʔυϕʔεશମͰ͏ͷ͕ޮՌతʢϩοΫΠϯ !ʣ
Slide 18
Slide 18 text
ඇಉظॲཧͷఆܕԽ
• ಉظతAPI
• ςετɺCLIϓϩάϥϜ
• RxSwift: RxBlocking
// SignalProducer
func first() -> Result?
func single() -> Result?
func last() -> Result?
func wait() -> Result<(), Error>
Slide 19
Slide 19 text
ಉظॲཧͷϥοϓ
• ಉظॲཧ݁ՌͷϋϯυϦϯάඇಉظॲཧͷ߹ͱڞ௨Խ
• ಉظͱඇಉظΛҙࣝ͠ͳ͍
• ෦ॲཧ͕ಉظ͔ΒඇಉظʹมΘͬͯݺͼग़͠ଆʹӨ
ڹ͕ͳ͍
• ඇಉظॲཧͱͷ߹
Slide 20
Slide 20 text
ܕ͚͞ΕͨΤϥʔ
• Signal, SignalProducer
• Result ͔Βͷੜ: attempt, attemptMap
• throwsΛѻ͏࣌໌നͳܕͷΩϟετɺ͘͠NSErrorͱ
ͯ͠ѻ͏ʢResultͷAPIʣ
• RAC: Atomic, MutablePropertyΛআ͍ͯthrowsΘΕ͍ͯͳ
͍
• Carthage: throwsΘΕ͍ͯͳ͍
Slide 21
Slide 21 text
ܕ͚͞ΕͨΤϥʔ
• Result.NoError: ΠϯελϯεੜͰ͖ͳ͍Τϥʔܕ
• ࣦഊ͢ΔՄೳੑ͕ͳ͍͜ͱΛAPIͷγάωνϟʔͱͯ͠දݱͰ͖
Δ
• <~ΦϖϨʔλʔʹΑΔMutablePropertyͷSignal,
SignalProducerͷόΠϯσΟϯάͷͨΊʹNoErrorͰͳ͚Ε
ͳΒͳ͍ 1
1 https://github.com/ReactiveCocoa/ReactiveCocoa/blob/v4.1.0/ReactiveCocoa/Swift/Property.swift#L241-L302
Slide 22
Slide 22 text
!" Happy RAC Coding!! "!
Slide 23
Slide 23 text
Thank you❗"