Ruby相当于PHP的$ this [英] Ruby equivalent to PHP's $this

问题描述

在Ruby中，PHP的$this->等效于什么?

What is the equivalent of PHP's $this-> in Ruby?

推荐答案

this的红宝石等效值为self-它们都引用当前实例.

The ruby equivalent of this is self - they both refer to the current instance.

棘手的部分是，在Ruby类作用域中，self引用了类Class的当前实例，该实例定义了您要构建的类.在方法内部，self引用该类的实例.

The tricky part is that in Ruby class scope, self refers to the current instance of the class Class that defines the class you are building. Inside a method, self refers to the instance of the class.

例如:

class Example
  puts self  # => "Example" - the stringified class object

  def foo
    puts self  # #<Example:0xdeadbeef> - the stringified instance
  end
end

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