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Ruby for your two internal programmers
Jano González
October 03, 2013
Programming
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Ruby for your two internal programmers
My Arrrrcamp 2013 talk
Jano González
October 03, 2013
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Transcript
None
None
HELLO GHENT!
B - AT = G
PIRATES
RUBY FOR BIPOLAR PROGRAMMERS
$ whoami
@janogonzalez
@hop_in
PIRATES IN CHILE
XVI CENTURY
SIR FRANCIS DRAKE
HERO OR PIRATE?
AKA EL DRAKE
6.5M$ REWARD
SIR FRANCIS DRAKE
SIR FRANCIS DRAKE
HIDDEN TREASURES
ISLA MOCHA
MOCHA DICK
XXI CENTURY
NEW PIRATES
NEW PIRATES
NEW PIRATES
☑ PIRATES ☐ RUBY
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(&:*)
EXPRESS YOURSELF
EXPRESS YOURSELF File.open('my.txt').each do |line| puts line if line =~
/jano/ end
THE HIDDEN TRUTH
HIDDEN TRUTH $ irb > puts 'Ahoy World!' # Ahoy
World! # => nil
HIDDEN TRUTH > self.class # => Object
HIDDEN TRUTH > Object.included_modules # => [Kernel]
HIDDEN TRUTH > Kernel.methods.include? :puts # => true
THE MOST HIDDEN TRUTH
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
EXAMPLE case account_type when :premium then # do stuff when
:standard then # do stuff when :personal then # do stuff end
EXAMPLE class AccountAccount def initialize # do stuff end def
execute(context) # do stuff end end
EXAMPLE class PersonalFactory def self.create(type) name = "#{type.capitalize} Account" klass
= Kernel.const_get(name) klass.new end end
EXAMPLE AccountFactory .create(account_type) .execute(context)
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
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
कഁ
SHU कഁ
HA कഁ
RI कഁ
None
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://en.wikipedia.org/wiki/File: 1590_or_later_Marcus_Gheeraerts,_Sir_Francis_Drake_Buckland_Abbey, _Devon.jpg • http://en.wikipedia.org/wiki/File:New_Albion._English_galleon_ %22Golden_Hinde %22_by_Sir_Francis_Drake._Oil_on_canvas._60_x_90_cm..jpg •
http://en.wikipedia.org/wiki/File:DRAKE_1577-1580.png • http://www.vivimoslanoticia.cl/wp-content/uploads/2013/09/Pel %C3%ADculas-piratas.jpg • http://radiopolar.com/images/noticias/20101127174025.jpg • http://upload.wikimedia.org/wikipedia/commons/a/aa/Isla_Mocha_1.jpg • http://www.todayifoundout.com/wp-content/uploads/2011/12/Moby- Dick-3.jpg