Ruby Module.method_removed用法及代码示例

method_removed(method_name)

每当从接收器中删除实例方法时作为回调调用。

module Chatty
  def self.method_removed(method_name)
    puts "Removing #{method_name.inspect}"
  end
  def self.some_class_method() end
  def some_instance_method() end
  class << self
    remove_method :some_class_method
  end
  remove_method :some_instance_method
end

产生：

Removing :some_instance_method