Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Brief Ruby/Ruby on Rails intro
Search
Florian Plank
March 28, 2014
Programming
3
170
Brief Ruby/Ruby on Rails intro
Florian Plank
March 28, 2014
Tweet
Share
More Decks by Florian Plank
See All by Florian Plank
Ready, set, immersion!
polarblau
0
170
Prototyping all the things
polarblau
2
160
CoffeeScript vs. ECMAScript 6
polarblau
5
3.5k
Design for a complex Reality — Siili Breakfast Edition
polarblau
0
130
Enabling Design for a Complex Reality
polarblau
2
130
A primer on Content Security Policy
polarblau
1
390
Rails and the future of the open web
polarblau
3
120
Ruby Idioms
polarblau
3
570
How to ask questions and find the right answers
polarblau
2
340
Other Decks in Programming
See All in Programming
事業KPIを基に価値の解像度を上げる
nealle
0
130
iOSアプリで測る!名古屋駅までの 方向と距離
ryunakayama
0
160
CursorとDevinが仲間!?AI駆動で新規プロダクト開発に挑んだ3ヶ月を振り返る / A Story of New Product Development with Cursor and Devin
rkaga
5
1k
The Missing Link in Angular’s Signal Story: Resource API and httpResource
manfredsteyer
PRO
0
150
リアーキテクチャの現場で向き合う 既存サービスの読み解きと設計判断
ymiyamu
0
130
REALITY コマンド作成チュートリアル
nishiuriraku
0
120
note の Elasticsearch 更新系を支える技術
tchov
9
3.6k
2025-04-25 GitHub Copilot Agent ライブデモ(スクリプト)
goataka
0
120
Jakarta EE Meets AI
ivargrimstad
0
970
The Nature of Complexity in John Ousterhout’s Philosophy of Software Design
philipschwarz
PRO
0
170
状態と共に暮らす:ステートフルへの挑戦
ypresto
3
1.3k
医療系ソフトウェアのAI駆動開発
koukimiura
1
130
Featured
See All Featured
Facilitating Awesome Meetings
lara
54
6.4k
Building Flexible Design Systems
yeseniaperezcruz
329
39k
Automating Front-end Workflow
addyosmani
1370
200k
A Modern Web Designer's Workflow
chriscoyier
693
190k
Designing Dashboards & Data Visualisations in Web Apps
destraynor
231
53k
Making the Leap to Tech Lead
cromwellryan
133
9.3k
Product Roadmaps are Hard
iamctodd
PRO
53
11k
4 Signs Your Business is Dying
shpigford
183
22k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
52
2.5k
Building a Modern Day E-commerce SEO Strategy
aleyda
40
7.3k
Done Done
chrislema
184
16k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
45
9.5k
Transcript
RUBY A PROGRAMMER’S BEST FRIEND
Background
Yukihiro “Matz” Matsumoto
I hope to see Ruby help every programmer in the
world to be productive, and to enjoy programming, and to be happy. at is the primary purpose of Ruby language.” “
- Programmer happiness - Principle of least astonishment - Human
readable - Beautiful syntax Principles
- RubyGems, Bundler & Rake - Multiple implementations (MRI, JRuby,
Rubinius, mruby, MacRuby, Topaz, …) - Solid Standard Library Ecosystem
- MINASWAN - Self re ective - Open - Quirky
Community
The Language A Sales Pitch
None
Object–oriented 1
5.times { print "We love Ruby" }
class Animal def eat(food) puts "Animal eating" end end my_animal
= Animal.new animal.eat # => "Animal eating"
class Dog < Animal def eat(food) puts "Dog eating" super
end end
module Stomach def digest(food) # ... end end
class Dog < Animal include Stomach end my_dog = Dog.new
dog.digest
-199.abs # => 199 "Foobar".split("").uniq.sort.join # => "abFor" nil.class #
=> "NilClass"
Dynamically typed Duck–typing 2
if dog.is_a? Animal dog.eat end dog.eat if dog.respond_to?(:eat)
Monkey–patching (Duck–punching) 3
… if it walks like a duck and talks like
a duck, it’s a duck, right? So if this duck is not giving you the noise that you want, you’ve got to just punch that duck until it returns what you expect.” “
class String def yell "#{self.upcase}!" end end "hello".yell # =>
"HELLO!"
Meta–programming 4
class Greeter def method_missing(name, *args) name = name.to_s if name
=~ /^hello_/ puts "Hello, #{name.gsub(/^hello_/, '')}!" else super end end end Greeter.new.hello_john # => "Hello, john!"
Blocks & Lambdas 5
[1, 2, 3].map { |i| i ** 2 } #
=> [1, 4, 9]
def greet(&block) # ... greeting = yield("John") # ... end
greet do |name| "Hello, #{name}!" end
A word on speed
Ruby on Rails An (even shorter) sales pitch
None
- Open Source Web Framework - MVC - Convention over
Con guration - DRY - Opinionated Principles
- Generators - ORM - Restful routing - Included webserver
Features
$ gem install rails $ rails new blog $ cd
blog $ rails generate scaffold post title content:text $ rake db:migrate $ rails server
author = Author.find_by :name => "John" author.posts.first.title
Book.where(:title => 'Tale of Two Cities') .first_or_create
class Account < ActiveRecord::Base # Returns all accounts with unread
messages. def self.with_unread_messages joins(:messages).merge(Message.unread) end end
None