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

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

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

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

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

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

murajun1978

class String
  def to_s
    "murajun1978"
  end
end

"Ruby".to_s # => "murajun1978"

murajun1978

module Foo
  def foo
    :foo
  end
end

class Bar
  include Foo

  def bar

murajun1978

ary = Array.new(2, Hash.new)
ary =[0][:dog] =  "pochi"

ary #=> ???


ary = Array.new(2){Hash.new}
ary[0][:dog] = "pochi"

ary #=> ???

murajun1978

ex.
[[5,3],[7,2],[8,/],[X],[7,1],[9,-],[6,2],[X],[6,/],[8,-]]
score: 126

[]: 1フレーム 
n: 倒したピンの数 
X: ストライク 
/: スペア 
-: ガター