问题描述
class Person
def name
puts "Dave"
end
end
puts Person.object_id
访问方法只有两种方式:
There are only two ways of accessing methods :
1) Someclass.method 在类方法的情况下.#where Someclass 是一个类.
1) Someclass.method in case of class methods. #where Someclass is a class.
2) 和 Object.method 当被访问的方法是在类中声明的常规方法时.而 Object 是一个类的实例.
2) and Object.method when the method being accessed is a regular method declared inside a class. and Object is an instance of a class.
它遵循模式 Object.method 那么，这是否意味着 Person 类真的是一个对象?
It follows the pattern Object.method so, does it mean Person class is really an object?
或者 object_id 是一个类方法?后者似乎不太可能，因为类方法不能继承到实例中.但是当我们做这样的事情时:
or object_id is a class method? The latter seems unlikely because class methods cannot be inherited into an instance. but when we do something like this :
a = Person.new
a.methods.include?("object_id") # this produces true
a 是 Person 类的实例，因此 object_id 不能是类方法.
a is an instance of Person class so object_id cannot be a class method.
推荐答案
是的，Ruby 类是对象:
Yes, Ruby classes are objects:
>> String.is_a? Object
=> true
>> String.methods.count
=> 131
>> Fixnum.methods.count
=> 128
这篇关于班级声明是红宝石的洗眼液吗?一切都是面向对象的吗?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！