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The Return of Stream I/O @andrestaltz Cycle.js.org A functional and - PowerPoint PPT Presentation

Jul 31, 2023 •477 likes •1.66k views

The Return of Stream I/O @andrestaltz Cycle.js.org A functional and reactive JavaScript framework for cleaner code Haskell A pure functional programming language Haskell A pure functional programming language Logic Effects Haskell A

  1. The Return of Stream I/O @andrestaltz

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

  14. Haskell A pure functional programming language

  15. Haskell A pure functional programming language Logic Effects

  16. Haskell A pure functional programming language Logic Effects

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

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

  19. Monadic I/O Logic Effects

  24. Program Compiler, binary

  25. Stream I/O Logic Effects

  26. Program Operating binary System

  27. Requests "Write" msgs Program Operating binary System

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

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

  42. Reactive system versus Transformational system

  43. (1998) "A transformational system repeatedly waits for all its inputs to arrive, carries out some processing, and outputs the results when the processing is done."

  44. (start) 
 Inputs Processing Output 
 (done)

  45. 
 Examples: 
 Compiler 
 UNIX commands

  46. "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."

  47. Input Output Processing

  48. 
 Examples: 
 Real-time systems User interfaces Websites Servers

  49. Transformational programs Reactive programs 1990 2000 2010

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  93. Elm

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

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