I just found out a bug. Tracing the bug, I saw that this is violated when A (and hence B) is nil.
I just want to make sure I am not missing anything here.
Is the answer of the question true or do I just find an exception?
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I just found out a bug. Tracing the bug, I saw that this is violated when A (and hence B) is nil.
I just want to make sure I am not missing anything here.
Is the answer of the question true or do I just find an exception?
The return code from a message sent to
nilwill always be 0, which equates toNOor false. So the behaviour you observe is expected and correct, even if it may not seem exactly intuitive. Differentnilobjects aren’t properly equal, sincenildoesn’t really have an identity.