The document discusses Bruce Lee's philosophy applied to software development, emphasizing adaptability, simplicity, and efficiency. It highlights principles such as 'begin at the core,' 'recognize the value,' and 'experiment,' paralleling them with programming practices like the DRY principle. It also includes a variety of quotes from Bruce Lee to illustrate these concepts.

1. Confoo 09-03-2018
Bruce Lee Driven
Development
Jeroen van der Gulik

2. About me
❖ Software Architect/ Consultant
❖ Co-Founder Isset
(https://isset.nl)
❖ Señor Developer
❖ Organizer DDDNL
❖ Builder of Artificial Stupidity
❖ @n0x13

11. dev-books.com

15. S. O. L. I. D.

16. –Bruce Lee
“Notice that the stiffest tree
is most easily cracked …”

17. –Bruce Lee
“… while the bamboo survives
by bending with the wind.”

24. “Life is never stagnation.
It is constant movement, constant change.”

33. “Those who are unaware they are walking
in darkness will never seek the light.”

34. .
|-- app
|-- config
|-- config.ru
|-- CONTRIBUTING.md
|-- db
|-- doc
|-- extra
|-- files -> ../files
|-- Gemfile
|-- Gemfile.lock
|-- lib
|-- log
|-- plugins
|-- public
|-- Rakefile
|-- README.rdoc
|-- script
|-- test
`-- tmp

35. app/
|-- controllers
|-- helpers
|-- models
`-- views

36. app/models/
|-- attachment.rb
|-- auth_source_ldap.rb
|-- auth_source.rb
|-- board.rb
|-- change.rb
|-- changeset.rb
|-- comment.rb
|-- custom_field.rb
|-- custom_field_value.rb
|-- custom_value.rb
|-- document_category_custom_field.rb
|-- document_category.rb
|-- document.rb
|-- enabled_module.rb
|-- enumeration.rb
|-- group_anonymous.rb
|-- group_builtin.rb
|-- group_custom_field.rb
|-- group_non_member.rb
|-- group.rb
|-- issue_category.rb
|-- issue_custom_field.rb
|-- issue_priority_custom_field.rb
|-- issue_priority.rb
|-- issue_query.rb
|-- issue.rb
|-- issue_relation.rb
|-- issue_status.rb
|-- journal_detail.rb
|-- journal.rb
|-- mailer.rb
|-- mail_handler.rb
|-- member.rb
|-- member_role.rb
|-- message.rb
|-- news.rb
|-- principal.rb
|-- project_custom_field.rb
|-- project.rb
|-- query.rb
|-- repository
|-- repository.rb
|-- role.rb
|-- setting.rb
|-- time_entry_activity_custom_field.rb
|-- time_entry_activity.rb
|-- time_entry_custom_field.rb
|-- time_entry_query.rb
|-- time_entry.rb
|-- token.rb
|-- tracker.rb
|-- user_custom_field.rb
|-- user_preference.rb
|-- user.rb
|-- version_custom_field.rb
|-- version.rb
|-- watcher.rb
|-- wiki_content.rb
|-- wiki_page.rb
|-- wiki.rb
|-- wiki_redirect.rb
|-- workflow_permission.rb
|-- workflow_rule.rb
`-- workflow_transition.rb

37. app/controllers/
|-- account_controller.rb
|-- activities_controller.rb
|-- admin_controller.rb
|-- application_controller.rb
|-- attachments_controller.rb
|-- auth_sources_controller.rb
|-- auto_completes_controller.rb
|-- boards_controller.rb
|-- calendars_controller.rb
|-- comments_controller.rb
|-- context_menus_controller.rb
|-- custom_fields_controller.rb
|-- documents_controller.rb
|-- enumerations_controller.rb
|-- files_controller.rb
|-- gantts_controller.rb
|-- groups_controller.rb
|-- issue_categories_controller.rb
|-- issue_relations_controller.rb
|-- issues_controller.rb
|-- issue_statuses_controller.rb
|-- journals_controller.rb
|-- mail_handler_controller.rb
|-- members_controller.rb
|-- messages_controller.rb
|-- my_controller.rb
|-- news_controller.rb
|-- previews_controller.rb
|-- project_enumerations_controller.rb
|-- projects_controller.rb
|-- queries_controller.rb
|-- reports_controller.rb
|-- repositories_controller.rb
|-- roles_controller.rb
|-- search_controller.rb
|-- settings_controller.rb
|-- sys_controller.rb
|-- timelog_controller.rb
|-- trackers_controller.rb
|-- users_controller.rb
|-- versions_controller.rb
|-- watchers_controller.rb
|-- welcome_controller.rb
|-- wiki_controller.rb
|-- wikis_controller.rb
`-- workflows_controller.rb

39. .
├── CONTRIBUTING.md
├── Gruntfile.js
├── LICENSE
├── README.md
├── app
├── artisan
├── bootstrap
├── bower.json
├── codeception.yml
├── composer.json
├── composer.lock
├── config
├── database
├── docs
├── gulpfile.js
├── package.json
├── phpspec.yml
├── phpunit.xml
├── public
├── resources
├── server.php
├── storage
└── tests

40. app
├── Commands
├── Console
├── Events
├── Exceptions
├── Handlers
├── Http
├── Includes
├── Libraries
├── Listeners
├── Models
├── Ninja
├── Policies
├── Providers
└── Services

41. app
├── Commands
├── Console
├── Events
├── Exceptions
├── Handlers
├── Http
├── Includes
├── Libraries
├── Listeners
├── Models
├── Ninja
├── Policies
├── Providers
└── Services

42. app/Ninja
├── Datatables
├── Import
├── Intents
├── Mailers
├── Notifications
├── PaymentDrivers
├── Presenters
├── Repositories
├── Serializers
└── Transformers

43. app/Models
├── Account.php
├── AccountGateway.php
├── AccountGatewaySettings.php
├── AccountGatewayToken.php
├── AccountToken.php
├── Activity.php
├── Affiliate.php
├── BalanceAffecting.php
├── Bank.php
├── BankAccount.php
├── BankSubaccount.php
├── Client.php
├── Company.php
├── Contact.php
├── Country.php
├── Credit.php
├── Currency.php
├── DateFormat.php
├── DatetimeFormat.p
├── Document.php
├── EntityModel.php
├── Expense.php
├── ExpenseCategory.php
├── Font.php
├── Frequency.php
├── Gateway.php
├── GatewayType.php
├── Industry.php
├── Invitation.php
├── Invoice.php
├── InvoiceDesign.php
├── InvoiceItem.php
├── InvoiceStatus.php
├── Language.php
├── License.php
├── OwnedByClientTrait.php
├── Payment.php
├── PaymentLibrary.php
├── PaymentMethod.php
├── PaymentStatus.php
├── PaymentTerm.php
├── PaymentType.php
├── Product.php
├── Project.php
├── SecurityCode.php
├── Size.php
├── Subscription.php
├── Task.php
├── TaxRate.php
├── Theme.php
├── Timezone.php
├── Traits
├── User.php
├── UserAccount.php
├── Vendor.php
└── VendorContact.php

44. app/Http/Controllers
├── AccountApiController.php
├── AccountController.php
├── AccountGatewayController.php
├── ActivityController.php
├── AppController.php
├── Auth
├── BankAccountController.php
├── BaseAPIController.php
├── BaseController.php
├── BlueVineController.php
├── BotController.php
├── ClientApiController.php
├── ClientAuth
├── ClientController.php
├── ClientPortalController.php
├── Controller.php
├── CreditController.php
├── DashboardApiController.php
├── DashboardController.php
├── DocumentAPIController.php
├── DocumentController.php
├── ExpenseApiController.php
├── ExpenseCategoryApiController.php
├── ExpenseCategoryController.php
├── ExpenseController.php
├── ExportController.php
├── HomeController.php
├── ImportController.php
├── IntegrationController.php
├── InvoiceApiController.php
├── InvoiceController.php
├── NinjaController.php
├── OnlinePaymentController.php
├── PaymentApiController.php
├── PaymentController.php
├── PaymentTermController.php
├── ProductApiController.php
├── ProductController.php
├── ProjectController.php
├── QuoteApiController.php
├── QuoteController.php
├── RecurringInvoiceController.php
├── ReportController.php
├── SelfUpdateController.php
├── TaskApiController.php
├── TaskController.php
├── TaxRateApiController.php
├── TaxRateController.php
├── TokenController.php
├── UserApiController.php
├── UserController.php
├── VendorApiController.php
└── VendorController.php

46. HouseBundle
├── Command
│ ├── GotoBedCommand.php
│ └── GetDressedCommand.php
├── Controllers
│ ├── BedController.php
│ ├── ClothesController.php
│ └── StairsController.php
├── Entity
│ ├── BedFurniture.php
│ ├── Cement.php
│ ├── ClosetFurniture.php
│ ├── Floor.php
│ ├── Wall.php
│ └── Wood.php
├── HouseBundle.php
├── Repository
│ ├── BedFurnitureRepositoy.php
│ └── ClosetFurnitureRepository.php
├── Resources
├── Service
│ ├── ChangeRoomService.php
│ └── SleepService.php
└── Tests

47. ActualHouse
├── FirstFloor
│ ├── BathRoom
│ ├── HallWay
│ ├── Kitchen
│ └── LivingRoom
├── SecondFloor
│ ├── BathRoom
│ ├── GuestBedRoom
│ ├── Hallway
│ └── MasterBedRoom
│ ├── Actions
│ │ ├── GoToBed.php
│ │ ├── GetDressed.php
│ └── Furniture
│ ├── ClothesCloset.php
│ └── DoubleBed.php
└── Shared
└── Stairs.php

49. “The junior hardcodes it,
The medior creates an
abstract factory for it,
The senior hardcodes it.”

61. – Bruce Lee
“Use only that which works,
and take it from any place
you can find it.”

63. Jeet Kune Do
❖ Efficiency
❖ Directness
❖ Simplicity

64. – Bruce Lee
“The less effort, the faster and
more powerful you will be.”

65. Bruce Lee Driven Development
A.K.A. Jeet Kune Do

66. B.L.D.D.
❖ Begin at the Core

70. – Bruce Lee
“In order to taste my cup of water
you must first empty your cup.”

72. B.L.D.D.
❖ Begin at the Core
❖ Recognise the Value

73. “As a Kung Fu Master
I want to travel fast to dojos
so I can proof I’m the best.”

79. “The key to immortality is first living
a life worth remembering.”

80. B.L.D.D.
❖ Begin at the Core
❖ Recognise the Value
❖ Use the simplest most direct approach first

85. B.L.D.D.
❖ Begin at the Core
❖ Recognise the Value
❖ Use the simplest most direct approach first
❖ Change is inevitable

86. – Bruce Lee
“Adapt what is useful, reject what
is useless, and add what is
specifically your own.”

87. D.R.Y.

88. Don’t Repeat Yourself

90. DO Repeat Yourself

91. B.L.D.D.
❖ Begin at the Core
❖ Recognise the Value
❖ Use the simplest most direct approach first
❖ Change is inevitable
❖ Experiment

95. – Bruce Lee
“Mistakes are always forgivable, if
one has the courage to admit them.”

96. B.L.D.D.
❖ Begin at the Core
❖ Recognise the Value
❖ Use the simplest most direct approach first
❖ Change is inevitable
❖ Experiment

97. – Bruce Lee
“A goal is not always meant to be
reached, it often serves simply as
something to aim at.”

100. – Bruce Lee
“Obey the principles without
being bound by them.”

102. – Bruce Lee
“If you want to learn to swim jump into
the water. On dry land no frame of mind
is ever going to help you.”

103. “Don’t get set into one form, adapt it and build
your own, and let it grow, be like water.”