objective-c - “NSNotification&KVO&Block&Delegate之间的区别？”你们一般会怎么回答

Question

以前面试时碰到过这个问题，不知道网上的回答合不合理

Answer 1

Ask your interviewer, do you know Signal?
Then your interviewer blinked and asked you to leave quickly. ?

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Just kidding, here’s my formal answer:
Actually, you just need to answer the essence or summary of these four.

Answer 2

The names are different.

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Just kidding, here’s the formal answer:
In fact, most interviews mainly rely on luck, especially for novices. If the other party's skills are average or they plan to recruit a new person, you can just explain it literally, regardless of whether you really understand it or not. If the other person likes to be more serious or often engages in low-level things, the more answers you give, the more in-depth he may ask the same question, which may be detrimental or irrelevant to the results of your interview. In short, I suggest that in technical interviews, you should be honest, tell as much as you know, and come back to learn when asked if you don't understand.

Answer 3

Use it yourself, the uses are the same, and the difference is very obvious. Just talk about your experience, and the interviewer will understand what you mean.