The document describes a typical day at Pivotal Labs, focusing on techniques for improving team productivity such as pair programming, standup meetings, discussions, and retrospectives. It emphasizes organizing code through file structure and annotations in Swift to minimize decision fatigue. Styles are defined for UI elements through extensions to promote consistent branding.

1. MINIMIZING
DECISION FATIGUE
TO IMPROVE TEAM PRODUCTIVITY
TRY! SWIFT
MARCH, 2017
DEREK LEE
@DEREKLEEROCK

2. ☀ 🌛
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Class Struct
🤔
Tabs SpacesCocoapods CarthageStoryboards CodeA BUIKit ReactNative

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6. A DAY IN THE LIFE @ PIVOTAL LABS

7. BREAKFAST!
🕣8:45am

8. MORNING OFFICE STANDUP
🕘9:06am

9. 🕘9:15am
PROJECT STANDUP

10. PROJECT
ORGANIZATION

11. Open Quickly
⌘+⇧+O
Filter in Navigator
⌘+⌥+J
Reveal in Navigator
⌘+⇧+J
Find in Files
⌘+⇧+F
HOW CAN WE FIND FILES IN XCODE?

12. “Hunt and Peck”
HOW DO WE REALLY FIND FILES IN XCODE?

13. “Helpers” FolderNo organization
WHAT WE’D LIKE TO AVOID

14. MVC?

15. APPLICATION ・ COMPONENTS ・ UI

16. APPLICATION

17. COMPONENTS

18. UI

19. PAIR PROGRAMMING
🕙10:00am

20. PAIR PROGRAMMING - SETUP

21. ▸ Ping-Pong
PAIR PROGRAMMING - STYLES
+
▸ Driver + Navigator

22. PAIR PROGRAMMING - IN ACTION
▸ We pair 99% of the time
▸ All disciplines pair: Engineering, Design, PMs
▸ Change pairs daily
▸ Regularly switch tracks of work

23. LUNCHTIME TECH TALK
🕧12:30pm

24. BACK TO PAIRING
🕜1:30pm

25. IMPROMPTU TEAM DISCUSSION
🕝2:30pm

26. SWIFT FILE
ORGANIZATION

27. VIEW CONTROLLER: SHOW DOCUMENT ITEMS: ^ + 6
class CountingRepeaterViewController: UIViewController {
fileprivate let repeater: Repeater
fileprivate let maximumCountValue: Int
fileprivate var counterValue: Int
let countingLabel: UILabel
init(repeater: Repeater,
maximumCountValue: Int) { ... }
required init?(coder aDecoder: NSCoder) { ... }
override func viewDidLoad() { ... }
override func viewWillDisappear(_ animated: Bool) { ... }
func addSubviews() { ... }
func addConstraints() { ... }
...
}

28. With “// MARK:”Without Annotations With “// MARK: —“
MARK ANNOTATION COMPARISON

29. VIEW CONTROLLER ORGANIZATION
class CountingRepeaterViewController: UIViewController {
// MARK: - Properties
fileprivate let repeater: Repeater
fileprivate let maximumCountValue: Int
fileprivate var counterValue: Int
// MARK: - View Elements
let headerLabel: UILabel
let countingLabel: UILabel
// MARK: - Initialization
init(repeater: Repeater,
maximumCountValue: Int) { ... }
required init?(coder aDecoder: NSCoder) { ... }
// MARK: - Lifecycle Methods
override func viewDidLoad() { ... }
override func viewWillDisappear(_ animated: Bool)
}
// MARK: - Private Methods
fileprivate extension CountingRepeaterViewController {
func addSubviews() { ... }
func addConstraints() { ... }

30. VIEW CONTROLLER ORGANIZATION
class CountingRepeaterViewController: UIViewController {
// MARK: - Properties
fileprivate let repeater: Repeater
fileprivate let maximumCountValue: Int
fileprivate var counterValue: Int
// MARK: - View Elements
let headerLabel: UILabel
let countingLabel: UILabel
// MARK: - Initialization
init(repeater: Repeater,
maximumCountValue: Int) { ... }
required init?(coder aDecoder: NSCoder) { ... }
// MARK: - Lifecycle Methods
override func viewDidLoad() { ... }
override func viewWillDisappear(_ animated: Bool) { ... }
}
// MARK: - Private Methods
fileprivate extension CountingRepeaterViewController {
func addSubviews() { ... }
func addConstraints() { ... }
// MARK: - Lifecycle Methods
override func viewDidLoad() { ... }
override func viewWillDisappear(_ animated: Bool) { ... }
class CountingRepeaterViewController: UIViewController {
// MARK: - Properties
fileprivate let repeater: Repeater
fileprivate let maximumCountValue: Int
fileprivate var counterValue: Int
// MARK: - View Elements
let headerLabel: UILabel
let countingLabel: UILabel
// MARK: - Initialization
init(repeater: Repeater,
maximumCountValue: Int) { ... }
required init?(coder aDecoder: NSCoder) { ... }
// MARK: - Lifecycle Methods
override func viewDidLoad() { ... }
override func viewWillDisappear(_ animated: Bool)
}
// MARK: - Private Methods
fileprivate extension CountingRepeaterViewController {
func addSubviews() { ... }
func addConstraints() { ... }

31. CREATE TEMPLATE FROM XCODE SNIPPETS

32. PROTOCOL CONFORMANCE
struct DefaultCustomer: Customer {
let name: String
private(set) var rentals: [Rental]
init(name: String) { ... }
mutating func addRental(rental: Rental) { ... }
func createTextStatement() -> String { ... }
func createHtmlStatement() -> String { ... }
func getTotalCharge() -> Double { ... }
func getTotalFrequentRenterPoints() -> Int { ... }
}

33. PROTOCOL CONFORMANCE
struct DefaultCustomer: Customer {
// MARK: - Properties
let name: String
private(set) var rentals: [Rental]
// MARK: - Initialization
init(name: String) { ... }
mutating func addRental(rental: Rental) { ... }
func createTextStatement() -> String { ... }
func createHtmlStatement() -> String { ... }
func getTotalCharge() -> Double { ... }
func getTotalFrequentRenterPoints() -> Int { ... }
}

34. PROTOCOL CONFORMANCE
struct DefaultCustomer {
// MARK: - Properties
let name: String
private(set) var rentals: [Rental]
// MARK: - Initialization
init(name: String) { ... }
}
// MARK: - Customer
extension DefaultCustomer: Customer {
mutating func addRental(rental: Rental) { ... }
func createTextStatement() -> String { ... }
func createHtmlStatement() -> String { ... }
func getTotalCharge() -> Double { ... }
func getTotalFrequentRenterPoints() -> Int { ... }
}

35. PROTOCOL CONFORMANCE
struct DefaultCustomer {
// MARK: - Properties
let name: String
private(set) var rentals: [Rental]
// MARK: - Initialization
init(name: String) { ... }
}
// MARK: - Customer
extension DefaultCustomer: Customer {
mutating func addRental(rental: Rental) { ... }
func createTextStatement() -> String { ... }
func createHtmlStatement() -> String { ... }
}
// MARK: - Private Methods
fileprivate extension DefaultCustomer {
func getTotalCharge() -> Double { ... }
func getTotalFrequentRenterPoints() -> Int { ... }
}

36. PING-PONG BREAK
🕞3:30pm

37. CROSS-FUNCTIONAL PAIRING
🕓4:00pm
Engineering x Design

38. STYLING
UI OBJECTS

39. extension UIFont {
class func abcMediumFont(size: CGFloat) -> UIFont {
return UIFont(name: "AvenirNext-Medium", size: size)!
}
class func abcBoldFont(size: CGFloat) -> UIFont {
return UIFont(name: "AvenirNext-Bold", size: size)!
}
}
DEFINING FONTS

40. extension UIColor {
class var abcDarkSkyBlue: UIColor {
return UIColor(
red: 52.0 / 255.0,
green: 152.0 / 255.0,
blue: 219.0 / 255.0,
alpha: 1.0
)
}
class var abcBlueish: UIColor {
return UIColor(
red: 41.0 / 255.0,
green: 128.0 / 255.0,
blue: 185.0 / 255.0,
alpha: 1.0
)
}
}
DEFINING COLORS

41. enum UIButtonStyle {
case primary, negative
func applyTo(button: UIButton) {
switch (self) {
case .primary:
button.titleLabel?.font = UIFont.abcMediumFont(
size: 15
)
button.setTitleColor(UIColor.white, for: .normal)
button.backgroundColor = UIColor.abcDarkSkyBlue
button.layer.borderColor = UIColor.abcBlueish.cgColor
button.layer.borderWidth = 1.0
break
case .negative:
// ...
break
}
}
}
DEFINING STYLES

42. APPLYING STYLES
extension UIButton {
func apply(style: UIButtonStyle) {
style.applyTo(button: self)
}
}
class MyViewController: UIViewController {
let confirmButton: UIButton
let cancelButton: UIButton
...
fileprivate func applyStyles() {
confirmButton.apply(style: .primary)
cancelButton.apply(style: .negative)
}
}

43. RETROSPECTIVE (RETRO)
🕔5:00pm

44. RETROS - INGREDIENTS
🙂🙂
🙂
🙂
🙂
🙂
Core Team Members Food & Snacks
🍓🧀
🍙🍪
Drinks
☕🍵
🍷🍺

45. RETROS @ PIVOTAL LABS
😃
Discuss
😭
Keep
😕
Improve

46. RETROS @ PIVOTAL LABS
▸ Reflect → Continuous improvement
▸ Building Trust
▸ Honest communication
▸ Identify & solve problems early
▸ Team brainstorming

47. Kent Beck, Extreme Programming Explained
THE COURAGE TO SPEAK TRUTHS,
PLEASANT OR UNPLEASANT,
FOSTERS COMMUNICATION AND TRUST.

48. SUMMARY
▸ Project Standup
▸ Pair Programming
▸ Lunchtime Tech Talk
▸ Impromptu Team Discussions
▸ Cross-Functional Pairing
▸ Retrospectives
▸ Project Organization
▸ Swift File Organization
▸ Styling UI Objects

51. A B
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52. 😓😓 😓
😓😓 😓

53. 😓😓 😓
😓😓 😓

54. 😁😃 😛
🙃😎 😅

55. Thank you!
try! Swift March 2017

56. @DEREKLEEROCK
Thank you!
try! Swift March 2017