Ruby自定义超级初始化

我只是通过向您展示XMLRPC的代码是如何编写的,来补充其他答案

def new3(hash={})

      # convert all keys into lowercase strings
      h = {}
      hash.each { |k,v| h[k.to_s.downcase] = v }

      self.new(h['host'], h['path'], h['port'], h['proxy_host'], h['proxy_port'], h['user'], h['password'],
               h['use_ssl'], h['timeout'])
    end

http://www.ensta.fr/~diam/ruby/online/ruby-doc-stdlib/libdoc/xmlrpc/rdoc/classes/XMLRPC/Client.html

在派生类中创建一个新的类方法(非常像 new3 首先:

class MyDerived < XMLRPC::Client
    def self.new3(hashoptions)
         client = XMLRPC::Client.new3(hashoptions)
         # Do further initialisation here.
    end
end

myone = MyDerived.new3(:abc => 123, ...)

super 只在里面工作 initialize (并且只将参数更改为超类的 初始化 ),所以这里不适用。

你应该可以打电话 new3 关于你的子类

class MyClient < XMLRPC::Client
end
MyClient.new3({})

或者,如果需要执行其他操作,请覆盖它:

class MyClient < XMLRPC::Client
  def self.new3(args)
    client = super(args)
    # do some more stuff
    client
  end
end
MyClient.new3({})