The Return of Stream I/O

Slide 1

Slide 1 text

@andrestaltz The Return of Stream I/O

Slide 2

Slide 2 text

Cycle.js.org A functional and reactive JavaScript framework   for cleaner code

Slide 3

Slide 3 text

No content

Slide 4

Slide 4 text

No content

Slide 5

Slide 5 text

No content

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

No content

Slide 11

Slide 11 text

No content

Slide 12

Slide 12 text

No content

Slide 13

Slide 13 text

No content

Slide 14

Slide 14 text

Haskell A pure functional programming language

Slide 15

Slide 15 text

Haskell A pure functional programming language Logic Effects

Slide 16

Slide 16 text

Haskell A pure functional programming language Logic Effects

Slide 17

Slide 17 text

Logic Effects Monadic I/O Stream I/O Continuation I/O

Slide 18

Slide 18 text

Logic Effects Monadic I/O Stream I/O Continuation I/O

Slide 19

Slide 19 text

Logic Effects Monadic I/O

Slide 20

Slide 20 text

No content

Slide 21

Slide 21 text

No content

Slide 22

Slide 22 text

No content

Slide 23

Slide 23 text

No content

Slide 24

Slide 24 text

Program Compiler, binary

Slide 25

Slide 25 text

Logic Effects Stream I/O

Slide 26

Slide 26 text

Program binary Operating System

Slide 27

Slide 27 text

Program binary Operating System Requests "Write" msgs

Slide 28

Slide 28 text

Program binary Operating System Requests Responses "Write" msgs "Read" msgs

Slide 29

Slide 29 text

No content

Slide 30

Slide 30 text

No content

Slide 31

Slide 31 text

No content

Slide 32

Slide 32 text

No content

Slide 33

Slide 33 text

No content

Slide 34

Slide 34 text

No content

Slide 35

Slide 35 text

No content

Slide 36

Slide 36 text

No content

Slide 37

Slide 37 text

No content

Slide 38

Slide 38 text

Program binary Operating System Requests Responses "Write" msgs "Read" msgs

Slide 39

Slide 39 text

No content

Slide 40

Slide 40 text

No content

Slide 41

Slide 41 text

No content

Slide 42

Slide 42 text

Reactive system versus Transformational system

Slide 43

Slide 43 text

"A transformational system repeatedly waits for all its inputs to arrive, carries out some processing, and outputs the results when the processing is done." (1998)

Slide 44

Slide 44 text

(start)  Inputs Processing Output  (done)

Slide 45

Slide 45 text

Examples:    Compiler  UNIX commands

Slide 46

Slide 46 text

"A reactive system continuously interacts with its environment, using inputs and outputs that are either continuous in time or discrete. The inputs and outputs are often asynchronous, meaning that they may arrive or change values unpredictably at any point in time."

Slide 47

Slide 47 text

Input Processing Output

Slide 48

Slide 48 text

Examples:    Real-time systems User interfaces Websites Servers

Slide 49

Slide 49 text

1990 Reactive programs Transformational programs 2000 2010

Slide 50

Slide 50 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript

Slide 51

Slide 51 text

No content

Slide 52

Slide 52 text

No content

Slide 53

Slide 53 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript Haskell  Stream I/O

Slide 54

Slide 54 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript Monadic I/O good for   transformational programs

Slide 55

Slide 55 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript Haskell  Monadic I/O

Slide 56

Slide 56 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript Multimedia

Slide 57

Slide 57 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript Period of confusion

Slide 58

Slide 58 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript Period of confusion

Slide 59

Slide 59 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript Shared-memory concurrency

Slide 60

Slide 60 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript Shared-memory concurrency

Slide 61

Slide 61 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript Early JavaScript  apps

Slide 62

Slide 62 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript Early JavaScript  apps

Slide 63

Slide 63 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript

Slide 64

Slide 64 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript Asynchronous Continuous interaction

Slide 65

Slide 65 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript Asynchronous Continuous interaction

Slide 66

Slide 66 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010 Java JavaScript Message passing  concurrency

Slide 67

Slide 67 text

Program binary Operating System Requests Responses Stream I/O Message passing Lazy lists  Blocking

Slide 68

Slide 68 text

Program binary Operating System Requests Responses "Stream I/O" Message passing Lazy lists Streams  Blocking Asynchronous

Slide 69

Slide 69 text

Program binary Operating System Requests Responses Message passing Streams  Asynchronous Cycle.js

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

No content

Slide 74

Slide 74 text

No content

Slide 75

Slide 75 text

No content

Slide 76

Slide 76 text

No content

Slide 77

Slide 77 text

No content

Slide 78

Slide 78 text

No content

Slide 79

Slide 79 text

No content

Slide 80

Slide 80 text

No content

Slide 81

Slide 81 text

No content

Slide 82

Slide 82 text

No content

Slide 83

Slide 83 text

No content

Slide 84

Slide 84 text

No content

Slide 85

Slide 85 text

No content

Slide 86

Slide 86 text

Stream of DOM events Stream of actions Stream of state Stream of reducers Stream of markup to the DOM

Slide 87

Slide 87 text

Asynchronous message passing User interfaces or any reactive system Separation of concerns  Handling question-and-answer I/O Cycle.js

Slide 88

Slide 88 text

No content

Slide 89

Slide 89 text

No content

Slide 90

Slide 90 text

No content

Slide 91

Slide 91 text

No content

Slide 92

Slide 92 text

No content

Slide 93

Slide 93 text

Elm

Slide 94

Slide 94 text

No content

Slide 95

Slide 95 text

Elm program Elm runtime Task Result "Do this and then   that and tell me the  result"

Slide 96

Slide 96 text

No content

Slide 97

Slide 97 text

No content

Slide 98

Slide 98 text

No content

Slide 99

Slide 99 text

No content

Slide 100

Slide 100 text

No content

Slide 101

Slide 101 text

Monadic I/O

Slide 102

Slide 102 text

No content

Slide 103

Slide 103 text

Task: Monadic I/O Msg and Cmd: "Stream I/O" Elm

Slide 104

Slide 104 text

Transformational   subprogram with Monadic I/O Reactive program  with "Stream I/O" Elm

Slide 105

Slide 105 text

Store Components State Action Flux

Slide 106

Slide 106 text

Message passing  +  purely functional  =  "Stream I/O"?

Slide 107

Slide 107 text

1990 Reactive programs Transformational programs 2000 2010

Slide 108

Slide 108 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010

Slide 109

Slide 109 text

1990 Pascal FORTRAN BASIC C Reactive programs Transformational programs 2000 2010

Slide 110

Slide 110 text

1990 Pascal FORTRAN BASIC Java JavaScript Ruby C# C Reactive programs Transformational programs 2000 2010

Slide 111

Slide 111 text

1990 Pascal FORTRAN BASIC Java JavaScript Ruby C# C Reactive programs Transformational programs 2000 2010

Slide 112

Slide 112 text

1990 Pascal FORTRAN BASIC Java JavaScript Ruby C# C Reactive programs Transformational programs 2000 2010 Elm Elixir Clojure Dart

Slide 113

Slide 113 text

1990 Pascal FORTRAN BASIC Java JavaScript Ruby C# C Reactive programs Transformational programs 2000 2010 Elm Elixir Clojure Dart Asynchronous Message passing Event-driven

Slide 114

Slide 114 text

Framework Concurrency Cycle.js Message passing React / Redux Message passing Elm Message passing Vue.js (Vuex) Message passing Angular v1 ($scope) Shared-memory ngrx Message passing

Slide 115

Slide 115 text

Framework Paradigm Cycle.js Wannabe functional React / Redux Wannabe functional Elm Functional Vue.js (Vuex) OOP Angular v1 ($scope) OOP ngrx Wannabe functional