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
160
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
160
Prototyping all the things
polarblau
2
160
CoffeeScript vs. ECMAScript 6
polarblau
5
3.4k
Design for a complex Reality — Siili Breakfast Edition
polarblau
0
120
Enabling Design for a Complex Reality
polarblau
2
120
A primer on Content Security Policy
polarblau
1
370
Rails and the future of the open web
polarblau
3
110
Ruby Idioms
polarblau
3
550
How to ask questions and find the right answers
polarblau
2
330
Other Decks in Programming
See All in Programming
データベースのオペレーターであるCloudNativePGがStatefulSetを使わない理由に迫る
nnaka2992
0
130
Bedrock Agentsレスポンス解析によるAgentのOps
licux
3
840
Introduction to kotlinx.rpc
arawn
0
690
Pulsar2 を雰囲気で使ってみよう
anoken
0
230
ARA Ansible for the teams
kksat
0
150
プログラミング言語学習のススメ / why-do-i-learn-programming-language
yashi8484
0
130
『GO』アプリ バックエンドサーバのコスト削減
mot_techtalk
0
140
動作確認やテストで漏れがちな観点3選
starfish719
6
1k
Amazon S3 TablesとAmazon S3 Metadataを触ってみた / 20250201-jawsug-tochigi-s3tables-s3metadata
kasacchiful
0
160
Compose でデザインと実装の差異を減らすための取り組み
oidy
1
300
XStateを用いた堅牢なReact Components設計~複雑なClient Stateをシンプルに~ @React Tokyo ミートアップ #2
kfurusho
1
890
[Fin-JAWS 第38回 ~re:Invent 2024 金融re:Cap~]FaultInjectionServiceアップデート@pre:Invent2024
shintaro_fukatsu
0
410
Featured
See All Featured
Distributed Sagas: A Protocol for Coordinating Microservices
caitiem20
330
21k
jQuery: Nuts, Bolts and Bling
dougneiner
63
7.6k
GitHub's CSS Performance
jonrohan
1030
460k
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
The Pragmatic Product Professional
lauravandoore
32
6.4k
The World Runs on Bad Software
bkeepers
PRO
67
11k
Making Projects Easy
brettharned
116
6k
Gamification - CAS2011
davidbonilla
80
5.1k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
251
21k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
366
25k
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
46
2.3k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
280
13k
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