RubyOnRails.TV
The Language

Ruby is a language
optimised for joy.

Created by Yukihiro "Matz" Matsumoto in 1995, Ruby is a dynamic, object-oriented language designed with a radical premise: programmers are humans, and code should be pleasant to read and write.

Philosophy

Everything is an object.

Numbers, strings, even nil — everything responds to methods. Blocks make iteration expressive. Symbols make configuration elegant. Duck typing means if it quacks like a duck, it is one.

  • — MINASWAN: Matz is nice and so we are nice.
  • — Convention over configuration.
  • — The principle of least surprise.
  • — Optimize for reading, not writing.
# Ruby reads almost like English.
5.times { puts "Hello, world!" }

[:coffee, :tea, :water].each do |drink|
  puts "One #{drink}, please."
end

class Person
  attr_accessor :name
  def initialize(name) = @name = name
  def greet = "Hi, I'm #{@name}."
end

puts Person.new("Yukihiro").greet
1995
First public release
3.x
Latest generation — fast, concurrent, typed
∞
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