在Ruby中覆盖==运算符
问题描述：
根据 docs ，数组.包括?对对象使用 == 比较.我来自Java，通常使用 .equals()完成这些操作，对于特定对象而言，该操作很容易覆盖.
According to the docs, Array.include? uses the == comparison on objects. I come from Java where such things are (usually) done with .equals() which is easy to override for a particular object.
如何在Ruby中覆盖 == 以允许我为特定对象指定 Array.include? strong>的行为?
How can I override == in Ruby to allow me to specify the behaviour of Array.include? for my particular object?
非常感谢.
答
在Ruby中，==只是一种方法(顶部带有一些语法糖，允许您编写foo == bar而不是foo.==(bar))，并且您覆盖了==就像您使用其他任何方法一样:
In Ruby == is just a method (with some syntax sugar on top allowing you to write foo == bar instead of foo.==(bar)) and you override == just like you would any other method:
class MyClass
def ==(other_object)
# return true if self is equal to other_object, false otherwise
end
end