在 Ruby 中，“接收者"是做什么的?参考? [英] In Ruby what does the "receiver" refer to?

问题描述

我正在阅读一篇关于具有接收器的方法的文档.什么是接收器?

I'm reading a document that talks about a method having a receiver. What's a receiver?

推荐答案

在 Ruby(以及其他受 SmallTalk 启发的语言)中，对象被视为发送和接收消息".

In Ruby (and other languages that take inspiration from SmallTalk) objects are thought of as sending and receiving 'messages'.

在 Ruby 中，Object，万物的基类，有一个发送方法:Object.send 例如:

In Ruby, Object, the base class of everything, has a send method: Object.send For example:

class Klass
  def hello
    "Hello!"
  end
end
k = Klass.new
k.send :hello     #=> "Hello!"
k.hello           #=> "Hello!"

在这两种情况下，k 都是hello"消息的接收者.

In both of these cases k is the receiver of the 'hello' message.

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