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Two programmers in one
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Jano González
June 07, 2014
Programming
1
120
Two programmers in one
My RubyNation 2014 talk
Jano González
June 07, 2014
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Transcript
TWO PROGRAMMERS IN ONE
@janogonzalez
None
A TALE OF TWO DEVELOPERS
HACKER V/S THINKER
HACKER
GET THINGS DONE
FAST
HACKS
MAINTENANCE NIGHTMARE
NEEDS MORE DUCT TAPE
THINKER
THINKS ABOUT ABSTRACTIONS
THINKS ABOUT MAINTAINABILITY
TOO MANY ABSTRACTIONS
ANALYSIS PARALYSIS
NEEDS MORE LAYERS
MY HISTORY
A TRILOGY OF MOVIES
THE HACKER YEARS
THE HACKER YEARS
THE LEARNING YEARS
THE UML YEARS
THE UML YEARS
THE HACKER WAS GONE
UML, RUP, GoF, XML, ETC.
STOCKHOLM SYNDROME
EVOLUTION?
THE ONE TRUE WAY™
THE PATH?
FEAR
I WAS SO WRONG!
EVERYDAY LIFE IS THE PATH
ENTER RUBY
SMALLTALK IN PERL’S DISGUISE
HAPPY THINKER
THINKER class AccountProtectionProxy def initialize(real_account, owner) @subject = real_account @owner
= owner end ! def method_missing(name, *args) check_access @subject.send(name, *args) end ...
OMG! GoF NEVER WAS SO EASY
HAPPY HACKER
HACKER $1 if str ~= /(foo)+/
ONE LINERS FTW!
HACKER ❤ THINKER
LET’S WORK TOGETHER
HARMONY
HARMONY (1..42).select(&:even?). map { |n| n * 2 }. reduce(&:*)
THE PATH
THE PATH IS NO PATH
THE PATH
WORKING TOGETHER
HACKER
EXPLORE NEW TERRITORY
THINKER
FIND ACCEPTANCE CRITERIA
DEFINE COMPONENTS
BALANCE
DELIVER VALUE V/S DIMINISH TECHNICAL DEBT
CREATIVITY V/S STANDARDIZATION
EXAMPLE
CASE STATEMENT V/S FACTORY + COMMANDS
CASE STATEMENT
EXAMPLE case account_type when :premium then # do stuff when
:standard then # do stuff when :personal then # do stuff end
FACTORY + COMMANDS
EXAMPLE class PremiumAccount def initialize # do stuff end !
def execute(context) # do stuff end end
EXAMPLE class AccountFactory def self.create(type) name = "#{type.capitalize}Account" klass =
Kernel.const_get(name) klass.new end end
EXAMPLE AccountFactory .create(account_type) .execute(context)
THE BEST APPROACH?
IMPLICIT V/S EXPLICIT
CLARITY V/S DRY
CLARITY V/S SRP
NOW V/S FUTURE
MY HUMBLE ADVICE
LEARN ABOUT BEST PRACTICES
DON’T FOLLOW BLINDLY YOUR FUNCTIONAL GURU
DON’T FOLLOW BLINDLY YOUR OO GURU
TESTS + REFACTORING
HOW TO IMPROVE IF YOU ARE A…
HACKER
LEARN ABOUT OOP & PATTERNS
TRY IMMUTABILITY & SEQUENCES
DO SEPARATE RESPONSIBILITIES
THINKER
LEARN ABOUT ONE LINERS
TRY CODE GOLF
DO EVIL STUFF
EVERYONE
READ A LOT OF CODE
WRITE A LOT OF CODE
ONE LAST ADVICE
守破離
SHU 守破離
HA 守破離
RI 守破離
None
ANTIPATTERN: ETERNAL SHU
ANTIPATTERN: START IN HA
CONCLUSIONS
RUBY GIVES YOU FREEDOM
LETS YOU STRIVE FOR BALANCE
AVOID CARGO CULT
GOOD ADVICE V/S LAWS
THERE IS NO TRUE PATH
IF YOU MEET THE BUDDHA IN THE ROAD, KILL HIM!
FOLLOW YOUR ❤
THANK YOU! ❤
IMAGES ! • http://commons.wikimedia.org/wiki/File:Yin_yang.svg • http://upload.wikimedia.org/wikipedia/commons/archive/f/ f4/20050917122925%21Janus-Vatican.JPG