[Ruby] - alias

alias :new_method, :new_method

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alias的用法

class MyClass
  def my_method
    puts 'hello'
  end
  alias :new_method :my_method
end

my_class = MyClass.new
my_class.new_method


# hello

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alias_method 的用法

module Mod
  alias_method :origExit, :exit
  def exit(code=0)
    print "Exiting with code #{code}\n"
    origExit(code)
  end
end
include Mod
exit(99)


# Exiting with code 99