RxSwift@ RxSwift

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•

subscribe

• subscribe subscribe

Operator

source subscribe

• RxSwift GCD

• observeOn subscribeOn

• iOS

•

•

(RxSwift ) GCD

NSOperationQueue

• RxSwift v2.5.0 (2016 7 master)

• 1

Observable

1 Cold Operator

subscribe subscribe on on

1( ) Scheduler

create Operator subscribeon

Sequence Observer

Sequence Observer

subscribe

Sequence Observer

subscribe

on

Question1

Map

Answer …

A.

Sequence Map Observer

subscribe

subscribe

Sequence Map Observer

subscribe

source

subscribe

subscribe

Sequence Map Observer

subscribe

subscribe on

subscribe

Sequence Map Observer

subscribe

on on

Question2

Map

Answer …

A.

Sequence Map ObserverPublish

Sequence Map ObserverPublish

subscribe

Sequence Map Observer

subscribe

Publish

subscribe

subscribe

Sequence Map Observer

subscribe

Publish

subscribe

subscribe

Sequence Map Observer

subscribe

Publish

subscribe

subscribe on

subscribe

Sequence Map Observer

subscribe

on on

Publish

subscribe

on

( )

subscribe

Sequence Map Observer

subscribe

on on

Publish

subscribe

on

Subject

on on

Question3

Map

Answer …

A.

• refCount() Hot subscribe

subscribe

• subscribe

( ) 1 Cold Operator

subscribe subscribe on on

( ) 1( ) Scheduler

create Operator subscribeon

…

2 create Operator Scheduler

subscribeScheduler on

subscribe

( )

Scheduler

• create Operator Scheduler

Scheduler

• Scheduler

Scheduler

Sequence Observer

subscribe

Sequence Observer

subscribe

Sequence Observer

subscribe

on

• Scheduler

subscribe

Scheduler( ) on

Question4

.Next, .Completed on

Answer …

A.

.Completed

• .Next

• MergeSinkIter subscribe →

Scheduler

on observer

• .Completed queue

dispatch

.Next .Completed

•

…

Question5

Replay .Next

1. .Next

2. subscribe

Answer …

A. subscribe

• replay subscribe

•

( ) 2 create Operator Scheduler

subscribeScheduler on

subscribe

( )

Observable

1. Cold Operator subscribe

subscribe on on

Scheduler create Operator

subscribe on

2. create Operator Scheduler

subscribe Scheduler on

subscribe

observeOn, subscribeOn

observeOn, subscribeOn

• Scheduler( )

Operator observeOn, subscribeOn

observeOn on Scheduler( )

subscribeOn subscribe Scheduler( )

Sequence Map Observer

subscribe

on

observeOn

.observeOn(backgroundScheduler)

subscribe subscribe

onon

Sequence Map Observer

subscribe

on

observeOn

.observeOn(backgroundScheduler)

subscribe subscribe

onon

Sequence Map Observer

subscribe

subscribeOn

.subscribeOn(backgroundScheduler)

subscribe

ononon

subscribe

Sequence Map Observer

subscribe

subscribeOn

.subscribeOn(backgroundScheduler)

subscribe

ononon

subscribe

observeOn

• observeOn

subscribeOn

• subscribeOn

subscribeOn

•

subscribeOn

• create Operator

Scheduler( )

Observable

Question6

Map

Answer …

A.

subscribe subscribe

ononon

subscribe

Sequence Map ObserversubscribeOn Map

subscribe

on

Question7

Map

Answer …

A.

subscribe subscribesubscribe

Sequence Map ObserversubscribeOn Map

subscribe

subscribe subscribesubscribe

Sequence Map ObserversubscribeOn Map

subscribe

Sequence MainScheduler

subscribe subscribesubscribe

Sequence Map ObserversubscribeOn Map

subscribe

on on on on

Question8

Map

Answer …

A.

• ( )

( ) observeOn

on Scheduler( )

( ) subscribeOn

subscribe Scheduler( )

Driver

Driver

• Driver RxCocoa UI

Observable ( )

•

Driver

• create Operator

• Observable

create Operator

• Driver create, just, of

Operator

•

subscribe subscribeOn

create Operator

Observable

• asDriver Observable Driver

• observeOn

Observable

drive, driveNext

• Driver subscribe

drive driveNext

• 1

drive, driveNext

Driver Operator

• map Operator

•

• driveOnScheduler Operator

Question9

Map

Answer …

A.

• drive

(

Question10

Map

Answer …

A.

subscribe

Sequence Map Observer

drive

on on

Question11

Map

Observer

Answer …

A. map observer

subscribe

Sequence Map Observer

drive

onon

2

NSURLSession+Rx

NSURLSession+Rx

• rx_response rx_JSON

on

→ UI

Observable

1. Cold Operator subscribe

subscribe on on

Scheduler create Operator

subscribe on

2. create Operator Scheduler

subscribe Scheduler on

subscribe

observeOn, subscribeOn

1. subscribeOn subscribe Scheduler(

)

2. observeOn on Scheduler( )