RxSwift 시작하기

Slide 1

Slide 1 text

RxSwift द੘ೞӝ ੹ࣻৌ (github.com/devxoul)

Slide 2

Slide 2 text

੹ࣻৌ • StyleShare Inc. • SW Maestro 2ӝ • RxSwift

Slide 3

Slide 3 text

RxSwift?

Slide 4

Slide 4 text

RxSwift = ReactiveX + Swift

Slide 5

Slide 5 text

RxSwift = ReactiveX + Swift

Slide 6

Slide 6 text

RxSwift = ReactiveX + Swift ?

Slide 7

Slide 7 text

RxSwift = ReactiveX + Swift Re + ActiveX

Slide 8

Slide 8 text

No content

Slide 9

Slide 9 text

੺؀ ইש

Slide 10

Slide 10 text

RxSwift = ReactiveX + Swift Reactive + Extension

Slide 11

Slide 11 text

RxSwift = ReactiveX + Swift ߈਽ഋ ೐۽Ӓې߁ਸ ೡ ࣻ ੓ѱ ೧઱ח ഛ੢ಂ

Slide 12

Slide 12 text

RxSwift = ReactiveX + Swift ߈਽ഋ ೐۽Ӓې߁ਸ ೡ ࣻ ੓ѱ ೧઱ח ഛ੢ಂ ?

Slide 13

Slide 13 text

a = 10 b = a * 2

Slide 14

Slide 14 text

a = 10 b = a * 2 print(b)

Slide 15

Slide 15 text

a = 10 b = a * 2 print(b) // 20

Slide 16

Slide 16 text

a = 10 b = a * 2 print(b) // 20 a = 30

Slide 17

Slide 17 text

a = 10 b = a * 2 print(b) // 20 a = 30 print(b)

Slide 18

Slide 18 text

a = 10 b = a * 2 print(b) // 20 a = 30 print(b) // 20

Slide 19

Slide 19 text

a = 10 b = a * 2 print(b) // 20 a = 30 print(b) // 20 60

Slide 20

Slide 20 text

߈਽ഋ ೐۽Ӓې߁ਸ ਤ೧ ReactiveXо ࢎਊೞח بҳ Observer Pattern Iterator Pattern Functional Programming

Slide 21

Slide 21 text

߈਽ഋ ೐۽Ӓې߁ਸ ਤ೧ ReactiveXо ࢎਊೞח بҳ Observer Pattern Iterator Pattern Functional Programming

Slide 22

Slide 22 text

Observable Observer

Slide 23

Slide 23 text

Observable Observer observe

Slide 24

Slide 24 text

Observable Observer observe notify

Slide 25

Slide 25 text

Observable Observer Observer Observer

Slide 26

Slide 26 text

߈਽ഋ ೐۽Ӓې߁ਸ ਤ೧ ReactiveXо ࢎਊೞח بҳ Observer Pattern Iterator Pattern Functional Programming

Slide 27

Slide 27 text

Iterator next() hasNext()

Slide 28

Slide 28 text

Iterator next() hasNext() 10 20 30 40

Slide 29

Slide 29 text

Iterator next() hasNext() 10 20 30 40

Slide 30

Slide 30 text

Iterator next() hasNext() 10 20 30 40 iterator.next()

Slide 31

Slide 31 text

Iterator next() hasNext() 10 20 30 40 iterator.next() // 10

Slide 32

Slide 32 text

Iterator next() hasNext() 10 20 30 40

Slide 33

Slide 33 text

Iterator next() hasNext() 10 20 30 40 iterator.next()

Slide 34

Slide 34 text

Iterator next() hasNext() 10 20 30 40 iterator.next() // 20

Slide 35

Slide 35 text

Iterator next() hasNext() 10 20 30 40

Slide 36

Slide 36 text

Iterator next() hasNext() 10 20 30 40 iterator.next()

Slide 37

Slide 37 text

Iterator next() hasNext() 10 20 30 40 iterator.next() // 30

Slide 38

Slide 38 text

Iterator next() hasNext() 10 20 30 40

Slide 39

Slide 39 text

Iterator next() hasNext() 10 20 30 40 iterator.next()

Slide 40

Slide 40 text

Iterator next() hasNext() 10 20 30 40 iterator.next() // 40

Slide 41

Slide 41 text

Iterator next() hasNext() 10 20 30 40

Slide 42

Slide 42 text

Iterator next() hasNext() 10 20 30 40 iterator.hasNext() // false

Slide 43

Slide 43 text

߈਽ഋ ೐۽Ӓې߁ਸ ਤ೧ ReactiveXо ࢎਊೞח بҳ Observer Pattern Iterator Pattern Functional Programming

Slide 44

Slide 44 text

• ࣻ೟੸ ೣࣻ੄ ઑ೤ਵ۽ ೐۽Ӓ۔ ҳࢿ • ࢚కܳ ߄Բ૑ ঋҊ, ࠛ߸ ੗ܐഋ ࢎਊ ೣࣻഋ ೐۽Ӓې߁

Slide 45

Slide 45 text

• Ҋର ೣࣻ • ࣽࣻ ೣࣻ • ... ೣࣻഋ ೐۽Ӓې߁ higher-order fuction pure fuction

Slide 46

Slide 46 text

• Ҋର ೣࣻ • ࣽࣻ ೣࣻ • ... ೣࣻഋ ೐۽Ӓې߁ higher-order fuction pure fuction

Slide 47

Slide 47 text

Ҋର ೣࣻ 1. ೣࣻܳ ׮ܲ ೣࣻ੄ ౵ۄ޷ఠ۽ ੹׳ 2. ೣࣻܳ ׮ܲ ೣࣻীࢲ Ѿҗ۽ ߈ജ

Slide 48

Slide 48 text

var array = [2, 6, 3, 1, 7] array.sort(by: { a, b in return a < b })

Slide 49

Slide 49 text

var array = [2, 6, 3, 1, 7] array.sort(by: { a, b in return a < b })

Slide 50

Slide 50 text

var array = [2, 6, 3, 1, 7] array.sort(by: { a, b in return a < b })

Slide 51

Slide 51 text

• Ҋର ೣࣻ • ࣽࣻ ೣࣻ • ... ೣࣻഋ ೐۽Ӓې߁ higher-order fuction pure fuction

Slide 52

Slide 52 text

ࣽࣻ ೣࣻ • ࠗ੘ਊਸ ߊࢤदః૑ ঋח ೣࣻ • ଵઑ ైݺࢿ੉ ੓ח ೣࣻ

Slide 53

Slide 53 text

ࣽࣻ ೣࣻ • ࠗ੘ਊਸ ߊࢤदః૑ ঋח ೣࣻ • ଵઑ ైݺࢿ੉ ੓ח ೣࣻ ೣࣻ झ௏೐ܳ ߩযաࢲ ߄Ӵ ࣁ࢚ী ߸ചܳ оೞח ೯ز (࢚క ߸҃, ֎౟ਕఊ, I/O ١)

Slide 54

Slide 54 text

ࣽࣻ ೣࣻ • ࠗ੘ਊਸ ߊࢤदః૑ ঋח ೣࣻ • ଵઑ ైݺࢿ੉ ੓ח ೣࣻ ੑ۱੉ زੌೞ׮ݶ ୹۱ب ೦࢚ زੌ

Slide 55

Slide 55 text

var rate = 1130 func krw(usd: Int) -> Int { return usd * rate }

Slide 56

Slide 56 text

var rate = 1130 func krw(usd: Int) -> Int { return usd * rate } krw(usd: 2) // 2260 krw(usd: 3) // 3390

Slide 57

Slide 57 text

var rate = 1130 func krw(usd: Int) -> Int { return usd * rate } rate = 1140 krw(usd: 2) // 2260 krw(usd: 3) // 3390

Slide 58

Slide 58 text

var rate = 1130 func krw(usd: Int) -> Int { return usd * rate } rate = 1140 krw(usd: 2) // 2260 2280 krw(usd: 3) // 3390 3420

Slide 59

Slide 59 text

var rate = 1130 func krw(usd: Int) -> Int { return usd * rate } ੹৉ ࢚కী ੄ઓ rate = 1140 krw(usd: 2) // 2260 2280 krw(usd: 3) // 3390 3420

Slide 60

Slide 60 text

var rate = 1130 func krw(usd: Int) -> Int { return usd * rate } ੹৉ ࢚కী ੄ઓ rate = 1140 krw(usd: 2) // 2260 2280 krw(usd: 3) // 3390 3420 ଵઑ ైݺࢿ੉ হ׮

Slide 61

Slide 61 text

func krw(usd: Int) -> Int { return usd * rate }

Slide 62

Slide 62 text

func krw(usd: Int ) -> Int { return usd * rate }

Slide 63

Slide 63 text

func krw(usd: Int, rate: Int) -> Int { return usd * rate }

Slide 64

Slide 64 text

func krw(usd: Int, rate: Int) -> Int { return usd * rate }

Slide 65

Slide 65 text

߈਽ഋ ೐۽Ӓې߁ਸ ਤ೧ ReactiveXо ࢎਊೞח بҳ Observable Pattern Iterator Pattern Functional Programming

Slide 66

Slide 66 text

No content

Slide 67

Slide 67 text

a 10 b a * 2

Slide 68

Slide 68 text

a 10 b 20

Slide 69

Slide 69 text

No content

Slide 70

Slide 70 text

No content

Slide 71

Slide 71 text

No content

Slide 72

Slide 72 text

No content

Slide 73

Slide 73 text

a b

Slide 74

Slide 74 text

10 20 30 40 a 20 40 60 80 b

Slide 75

Slide 75 text

10 20 30 40 a 20 40 60 80 b

Slide 76

Slide 76 text

10 20 30 40 a 20 40 60 80 b map(x => x * 2)

Slide 77

Slide 77 text

10 20 30 40 a 20 40 60 80 b map(x => x * 2) Marble Diagrams

Slide 78

Slide 78 text

20 40 60 80 b map(x => x * 2) Observable.from([10, 20, 30, 40])

Slide 79

Slide 79 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 }

Slide 80

Slide 80 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) })

Slide 81

Slide 81 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) })

Slide 82

Slide 82 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) })

Slide 83

Slide 83 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) // 20 })

Slide 84

Slide 84 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) })

Slide 85

Slide 85 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) })

Slide 86

Slide 86 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) // 40 })

Slide 87

Slide 87 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) })

Slide 88

Slide 88 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) })

Slide 89

Slide 89 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) // 60 })

Slide 90

Slide 90 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) })

Slide 91

Slide 91 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) })

Slide 92

Slide 92 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) // 80 })

Slide 93

Slide 93 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) // 80 }) Observable

Slide 94

Slide 94 text

Observable.from([10, 20, 30, 40]) .map { $0 * 2 } .subscribe(onNext: { value in print(value) // 80 }) Observer

Slide 95

Slide 95 text

Password ࢜ ࠺޻ߣഐ ࢸ੿ೞӝ (4੗ ੉࢚)

Slide 96

Slide 96 text

1 ࢜ ࠺޻ߣഐ ࢸ੿ೞӝ (4੗ ੉࢚) ࠺޻ߣഐо ցޖ ૣणפ׮. ❌

Slide 97

Slide 97 text

12 ࢜ ࠺޻ߣഐ ࢸ੿ೞӝ (4੗ ੉࢚) ࠺޻ߣഐо ցޖ ૣणפ׮. ❌

Slide 98

Slide 98 text

123 ࢜ ࠺޻ߣഐ ࢸ੿ೞӝ (4੗ ੉࢚) ࠺޻ߣഐо ցޖ ૣणפ׮. ❌

Slide 99

Slide 99 text

1234 ࢜ ࠺޻ߣഐ ࢸ੿ೞӝ (4੗ ੉࢚) ࢎਊ оמೠ ࠺޻ߣഐੑפ׮.

Slide 100

Slide 100 text

ੑ۱ ݫद૑

Slide 101

Slide 101 text

ੑ۱ ݫद૑ "1"

Slide 102

Slide 102 text

ੑ۱ ݫद૑ "1" map(str => str.length >= 4)

Slide 103

Slide 103 text

ੑ۱ ݫद૑ "1" map(str => str.length >= 4) false

Slide 104

Slide 104 text

"1" false map(str => str.length >= 4) map(valid => getMessage(valid)) ੑ۱ ݫद૑

Slide 105

Slide 105 text

"1" false map(str => str.length >= 4) "❌ " map(valid => getMessage(valid)) ੑ۱ ݫद૑

Slide 106

Slide 106 text

"1" "12" false map(str => str.length >= 4) "❌ " map(valid => getMessage(valid)) ੑ۱ ݫद૑

Slide 107

Slide 107 text

"1" "12" false false map(str => str.length >= 4) "❌ " map(valid => getMessage(valid)) ੑ۱ ݫद૑

Slide 108

Slide 108 text

"1" "12" false false map(str => str.length >= 4) "❌ " "❌ " map(valid => getMessage(valid)) ੑ۱ ݫद૑

Slide 109

Slide 109 text

"1" "12" "123" false false map(str => str.length >= 4) "❌ " "❌ " map(valid => getMessage(valid)) ੑ۱ ݫद૑

Slide 110

Slide 110 text

"1" "12" "123" false false false map(str => str.length >= 4) "❌ " "❌ " map(valid => getMessage(valid)) ੑ۱ ݫद૑

Slide 111

Slide 111 text

"1" "12" "123" false false false map(str => str.length >= 4) "❌ " "❌ " "❌ " map(valid => getMessage(valid)) ੑ۱ ݫद૑

Slide 112

Slide 112 text

"1" "12" "123" "1234" false false false map(str => str.length >= 4) "❌ " "❌ " "❌ " map(valid => getMessage(valid)) ੑ۱ ݫद૑

Slide 113

Slide 113 text

"1" "12" "123" "1234" false false false true map(str => str.length >= 4) "❌ " "❌ " "❌ " map(valid => getMessage(valid)) ੑ۱ ݫद૑

Slide 114

Slide 114 text

false false false true map(str => str.length >= 4) map(valid => getMessage(valid)) "1" "12" "123" "1234" ੑ۱ "❌ " "❌ " "❌ " "" ݫद૑

Slide 115

Slide 115 text

passwordField.rx.text.orEmpty

Slide 116

Slide 116 text

passwordField.rx.text.orEmpty .map { $0.characters.count >= 4 }

Slide 117

Slide 117 text

passwordField.rx.text.orEmpty .map { $0.characters.count >= 4 } .map { isValid in }

Slide 118

Slide 118 text

passwordField.rx.text.orEmpty .map { $0.characters.count >= 4 } .map { isValid in if isValid { return "ࢎਊ оמೠ ࠺޻ߣഐੑפ׮. " } else { return "࠺޻ߣഐо ցޖ ૣणפ׮. ❌" } }

Slide 119

Slide 119 text

passwordField.rx.text.orEmpty .map { $0.characters.count >= 4 } .map { isValid in if isValid { return "ࢎਊ оמೠ ࠺޻ߣഐੑפ׮. " } else { return "࠺޻ߣഐо ցޖ ૣणפ׮. ❌" } } .subscribe(onNext: { [weak self] message in self?.messageLabel.rx.text = message })

Slide 120

Slide 120 text

Slide 121

Slide 121 text

Slide 122

Slide 122 text

Slide 123

Slide 123 text

Slide 124

Slide 124 text

Slide 125

Slide 125 text

Slide 126

Slide 126 text

Slide 127

Slide 127 text

Slide 128

Slide 128 text

Slide 129

Slide 129 text

Slide 130

Slide 130 text

Slide 131

Slide 131 text

Slide 132

Slide 132 text

Slide 133

Slide 133 text

Slide 134

Slide 134 text

Slide 135

Slide 135 text

Slide 136

Slide 136 text

ࢎਊ੗ ੋఠۑ࣌ਸ ؘ੉ఠ ൒ܴਵ۽ ಴അ оמ

Slide 137

Slide 137 text

ࢎਊ੗ ੋఠۑ࣌ਸ ؘ੉ఠ ൒ܴਵ۽ ಴അ оמ Ӗ੗ ੑ۱: Observable ं੗ ੑ۱: Observable ߡౡ ఠ஖: Observable झ௼܀: Observable ...

Slide 138

Slide 138 text

Observable਷ ࠺زӝ झ౟ܿ

Slide 139

Slide 139 text

"1" "12" "123" "1234"

Slide 140

Slide 140 text

"1"

Slide 141

Slide 141 text

"1" ࠺زӝ

Slide 142

Slide 142 text

"1" "12" ࠺زӝ

Slide 143

Slide 143 text

"1" "12" ࠺زӝ ࠺زӝ

Slide 144

Slide 144 text

"1" "12" "123" ࠺زӝ ࠺زӝ

Slide 145

Slide 145 text

"1" "12" "123" ࠺زӝ ࠺زӝ ࠺زӝ

Slide 146

Slide 146 text

"1" "12" "123" "1234" ࠺زӝ ࠺زӝ ࠺زӝ

Slide 147

Slide 147 text

ࢎਊ੗ ץ֎੐ ࢸ੿ೞӝ Nickname

Slide 148

Slide 148 text

݃௼઱ழߡӒ ࢎਊ੗ ץ֎੐ ࢸ੿ೞӝ ੉޷ ࢎਊ઺ੋ ץ֎੐ੑפ׮. ❌

Slide 149

Slide 149 text

࠽ѱ੉எ ࢎਊ੗ ץ֎੐ ࢸ੿ೞӝ ੉޷ ࢎਊ઺ੋ ץ֎੐ੑפ׮. ❌

Slide 150

Slide 150 text

੹ࣻৌ ࢎਊ੗ ץ֎੐ ࢸ੿ೞӝ ࢎਊ оמೠ ץ֎੐ੑפ׮.

Slide 151

Slide 151 text

ץ֎੐ ઺ࠂ ୓௼ܳ ਤ೧ APIܳ ࢎਊ

Slide 152

Slide 152 text

ץ֎੐ ઺ࠂ ୓௼ܳ ਤ೧ APIܳ ࢎਊ = ࠺زӝ ੘স

Slide 153

Slide 153 text

nicknameField.rx.text.orEmpty

Slide 154

Slide 154 text

nicknameField.rx.text.orEmpty .map { nickname -> Bool in // return true of false }

Slide 155

Slide 155 text

࠺زӝ? nicknameField.rx.text.orEmpty .map { nickname -> Bool in // return true of false }

Slide 156

Slide 156 text

nicknameField.rx.text.orEmpty . map { nickname -> Bool in }

Slide 157

Slide 157 text

nicknameField.rx.text.orEmpty .flatMap { nickname -> Observable in }

Slide 158

Slide 158 text

nicknameField.rx.text.orEmpty .flatMap { nickname -> Observable in return API.checkNickname(nickname) }

Slide 159

Slide 159 text

nicknameField.rx.text.orEmpty .flatMap { nickname -> Observable in return API.checkNickname(nickname) } .map { isAvailable in return getMessage(isAvailable) }

Slide 160

Slide 160 text

nicknameField.rx.text.orEmpty .flatMap { nickname -> Observable in return API.checkNickname(nickname) } .map { isAvailable in return getMessage(isAvailable) } .subscribe(onNext: { [weak self] message in self?.messageLabel.text = message })

Slide 161