obj.nil? vs. obj == nil

问题描述:

是否最好使用 obj.nil? obj == nil


最好使用obj.nil吗? or obj == nil

这完全一样。从外部(pfff) *

It is exactly the same. It has the exact same observable effects from the outside ( pfff ) *


可观察到的效果, / em>

and what are the benefits of both.

如果您喜欢微优化全部,对象将返回 false除了对象 nil 本身的 .nil?消息 == 消息将与另一个对象执行微小的微比较
,以确定它是否是同一个对象。

If you like micro optimizations all the objects will return false to the .nil? message except for the object nil itself, while the object using the == message will perform a tiny micro comparison with the other object to determine if it is the same object.

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