Laziness-Driven Development in iOS - Mobile Makers Chicago, April 2016

Spring 2016 edition of my talk on how Laziness is secretly the best way to code.

Links galore at the end!

Transcript

1. Laziness-Driven
   Development in iOS
   Mobile Makers Chicago | April 2016 | by Ellen Shapiro
   spothero.com | justhum.com | designatednerd.com | @designatednerd
   

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2. What is Laziness-
   Driven Development?
   

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3. The laziness long game.
   

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4. What is lazy, but is NOT
   Laziness-Driven Development?
   

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5. Copy Pasta
   

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6. Code without tests
   

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7. Code which is fast to write,
   but impossible to read
   

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8. Using libraries for
   every possible task
   

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9. What is Laziness-Driven
   Development?
   » Smart reuse of code
   » Clear, Readable code
   » Removal of Stringly-typed code
   » Making smart decisions today to save yourself time
   and heartache tomorrow
   

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10. The primary philosophy of
    Laziness-Driven
    Development:
    

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11. Eventually, You're going to
    screw something up
    

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12. only screw it up once.
    Then, you only have to
    fix it once.
    

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13. Introductory
    Laziness-Driven development:
    Inheritance & MV*
    

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14. Keep code separated
    by its purpose
    

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15. Keep code with the
    same purpose
    centralized
    

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16. Aren't those just
    Best Practices?
    

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17. YES
    

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18. YEs, but they are
    only the beginning
    

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19. Beginning
    Laziness-Driven development:
    Constants,
    Structs
    and Enums
    

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20. Stringly-typed code
    Sucks
    

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22. espeshuly if u cant spel...
    (this is from just one repo)
    

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23. It's the worst
    

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24. String Constants:
    The Cure For
    Speling Problums
    

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25. Before:
    

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26. After:
    

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27. Lazy Swift Ninja:
    

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28. constants: Not just for strings
    self.viewWidth = 74;
    vs.
    self.viewWidth = kProfileViewWidth;
    

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29. Enums: Even
    lazier constants
    

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36. Beginning
    Laziness-Driven development:
    Comment And Name
    Clearly
    

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37. readability
    

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38. "programs must be written for
    people to read,
    and only incidentally for
    machines to execute."
    

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39. Variable naming
    BAD:
    UIView *v var v = UIView()
    CGPoint pt var pt = CGPoint(1, 1)
    BETTER:
    UIView *profileView var profileView = UIView()
    CGPoint profileOrigin var profileOrigin = CGPoint(1, 1)
    

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40. Method Naming
    Objective-C:
    extremelyLongAndDescriptiveMethodOnLabel:label
    withParameter:parameter
    andCompletionBlock:completion
    Swift:
    shortButClearMethodOnLabel(label, param, completion)
    

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42. Benefits
    of clear naming
    

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46. Some people say:
    "Comments Lie, Code Doesn't"
    

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47. If you update code without
    updating comments,
    you're doing it
    wrong
    

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48. //TODO:
    Write better comments
    

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49. What < Why
    

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50. Leave The Campsite Code
    cleaner
    than you found it
    

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51. the goal of good comments
    and clear naming is the same:
    Future laziness for you
    

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52. Beginning
    Laziness-Driven development:
    Unit Testing
    

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53. Testing stuff manually
    is a pain.
    (Repeat ad nauseam
    until it's fixed)
    

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54. Remember:
    Your computer is an
    awesome robot
    you can use to do your
    evil bidding
    

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58. Intermediate
    Laziness-Driven development:
    Categories &
    Extensions
    

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59. Adding functionality
    to existing objects
    (and also to structs in Swift)
    

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60. Objective-C:
    Categories
    UIView+XYZApp:
    - (void)xyz_circleify
    {
    self.layer.cornerRadius = CGRectGetWidth(self.frame) / 2;
    self.clipsToBounds = YES;
    }
    

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61. Watch for method
    name collsions
    

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62. Swift: Extensions
    MyViewExtension:
    extension UIView {
    public func xyz_circleify() {
    layer.cornerRadius = CGRectGetWidth(frame) / 2
    clipsToBounds = true
    }
    }
    

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63. Watch for method name collsions
    even in Swift
    

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64. Intermediate
    Laziness-Driven development:
    Laziness-Enhancing
    Tools
    

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65. Alcatraz: Xcode
    plugins for all!
    

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66. Plugins Before Alcatraz
    » Download project
    » Build, run, install,
    » Restart Xcode,
    » Do the hokey pokey and turn yourself about.
    » Uninstall by hunting down obscure folder and then
    forgetting what the hell you were doing in there.
    

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67. Plugins AFTER Alcatraz
    » Push button, install plugin.
    » Push other button to see plugin page.
    » Search plugins easily.
    » Push button, uninstall plugin.
    !
    

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68. Laziness-Enhancing
    Plugins
    

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69. VVDocumenter
    

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70. xTODO
    

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71. BBFullIssue
    Navigator
    

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72. SCXcodeMiniMap
    

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74. A place for ideas
    

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75. Get a better idea
    of what is simple
    and what is not
    

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76. MOGenerator - Make Core Data
    less painful
    

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77. MOGenerator Kills
    Stringly-Typed Code
    just to watch it die
    

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78. Lazier Code with MOGenerator
    

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79. Advanced
    Laziness-Driven development:
    UI Testing
    

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80. KIF
    

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81. KIF
    

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82. Xcode 7 UI TESTING
    

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83. All UI testing
    

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84. UI Testing Gotchas
    

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85. Advanced
    Laziness-Driven development:
    Adopting laziness techniques
    from other languges
    

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86. Android
    

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89. Figure out how to take the theory
    and use it in an iOS-friendly way
    

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90. Caution:
    Take care that you're bringing
    things over as supplements.
    

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91. Don't try to force a new
    language or platform to
    fit
    what you already know
    

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92. Advanced
    Laziness-Driven development:
    Writing Your own
    Laziness-Enhancing Tools
    

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93. When Should You
    write Your own tools?
    

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95. (Achtung! shameless
    self-promotion)
    

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96. My Experience
    Writing Tools
    

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97. Cat2Cat
    Asset Catalog To Category
    Instead of writing:
    [UIImage imageNamed:@"My Image Name"];
    you can write:
    [UIImage ac_My_Image_Name];
    

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98. How is this lazier?
    

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100. XcodeautoBasher
     

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102. in conclusion
     » Centralize your code, make it easy to read, and
     keep it separated by purpose, so it's easy to fix.
     » Get rid of stringly-typed code so it's harder to
     break in the first place.
     » Use the tools other people have built to enhance
     your laziness, or build new tools yourself.
     » Best practices are secretly the lazy way to code.
     

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103. Questions?
     

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104. Thank you!
     

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105. Links
     » Alcatraz: http://alcatraz.io/
     » Cocoa Controls: https://www.cocoacontrols.com/
     » Swift In Practice: https://developer.apple.com/
     videos/play/wwdc2015-411/
     » CountableIntEnum: https://gist.github.com/
     LoganWright/c8a26b1faf538e40f747
     » Swift API Design Guidelines: https://swift.org/
     documentation/api-design-guidelines
     

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106. Code Generation Tools
     » MOGenerator: https://github.com/rentzsch/
     mogenerator
     » Cat2Cat: https://github.com/vokal/Cat2Cat
     » objc codegenutils: https://github.com/square/objc-
     codegenutils/
     

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107. Alcatraz Plugins
     » https://github.com/vokal/XcodeAutoBasher
     » https://github.com/onevcat/VVDocumenter-Xcode
     » https://github.com/trawor/XToDo
     » https://github.com/neonichu/BBUFullIssueNavigator
     » https://github.com/stefanceriu/SCXcodeMiniMap
     

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108. image credits
     » Luca Nebuloni, Pasta with finocciona: https://
     www.flickr.com/photos/nebulux/10708289086
     » Tom Bech, Eurasian Wolf: https://www.flickr.com/
     photos/viatorius/9358589025
     » Michael D Beckwith, The Leeds Library: https://
     www.flickr.com/photos/118118485@N05/16438065636/
     

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