在 ruby 中创建 class 的对象时，控制台给出的十六进制代码是什么

Question

当我在ruby中创建class的对象时，控制台returns一个十六进制代码。这个十六进制代码有什么意义？

苹果=Fruits.new => #Fruits:0x00005569446a55d8

Answer 1

我假设您在 irb 或某种交互式控制台中运行。在这种情况下 inspect 用于显示 apple 的表示。如果你没有在Fruitsclass中定义你自己的inspect，那么它继承自Object。

inspect → string

Returns a string containing a human-readable representation of obj. The default inspect shows the object's class name, an encoding of its memory address, and a list of the instance variables and their values (by calling inspect on each of them). User defined classes should override this method to provide a better representation of obj. When overriding this method, it should return a string whose encoding is compatible with the default external encoding.
[ 1, 2, 3..4, 'five' ].inspect   #=> "[1, 2, 3..4, \"five\"]"
Time.new.inspect                 #=> "2008-03-08 19:43:39 +0900"

class Foo
end
Foo.new.inspect                  #=> "#<Foo:0x0300c868>"

class Bar
  def initialize
    @bar = 1
  end
end
Bar.new.inspect                  #=> "#<Bar:0x0300c868 @bar=1>"

在 ruby 中创建 class 的对象时，控制台给出的十六进制代码是什么

What is the hex code console gives when creating object of a class in ruby

ruby

oop

ruby-on-rails

inspect → string