murajun1978

module Foo
  def foo
    :foo
  end
end

class Bar
  include Foo

  def bar

murajun1978

class String
  def to_s
    "murajun1978"
  end
end

"Ruby".to_s # => "murajun1978"

murajun1978

module Murajun
  class String
    def to_s
      "murajun1978"
    end
  end
end

"Ruby".to_s # => "Ruby"
Murajun::String.new.to_s # => "murajun1978"

murajun1978

class Foo
  private_class_method def self.common_method(*syms)
    syms.each do |sym|
      define_method sym do
        puts sym
      end
    end
  end
  
  common_method :murajun, :murajun1978

murajun1978

[1, 2, 3].select {|n| n == 2}    # => [2]
[1, 2, 3].select &2.method(:==)  # => [2]

murajun1978

class Enemy
  def initialize
    @enemies = {}
  end
  
  def method_missing(method_name, *args)
    enemy = method_name.to_s
    if enemy =~ /=\z/
      @enemies[enemy.chop] = args[0]
    else

murajun1978

class Foo
  def bar
    :bar
  end
  
  def baz
    :baz
  end
end

murajun1978

anonymous_class = Class.new(String) do
  def hello(name)
    "Hello, #{name}"
  end
end

ex_class = anonymous_class.new

p ex_class.hello("murajun1978") # => murajun1978

murajun1978

class Murajun
  def initialize(name)
    @name = name
  end
  
  def murajun?
    @name == "murajun"
  end
end

murajun1978

box: inwy/[email protected]
services:
  - wercker/postgresql
build:
  steps:
    - bundle-install
    - rails-database-yml:
        service: postgresql
    - script:
        name: echo ruby information