Chapter 5 elements, references, and value types have been discussed in detail before. there is no new content here. Here we have made a detailed description of packing and unpacking, and there are very detailed and simple code to describe it. It is very well written! Reveals many of CLR's hidden packing operations. The last two sections mainly introduce the object equality and identity, the object Hasse table. I am not very familiar with the Hasse table. Just understand its thoughts! Today, I took this book to the classroom. Some of my colleagues who read this book have unlimited feelings. I don't know whether I should be happy or what I should do. I feel that I am not good at learning. I don't understand these books, I feel that I am, a person with average scores, I read such profound books, it is a bit uncomfortable. However, I am very happy to think about it. No matter what people say, I still can understand this book. I did learn something. Let others know what to say. After all, I am the only one in my major to read such a book, and I have gone to the postgraduate entrance even if I have better programming skills. I still don't know what to do, it is estimated that other people will not be able to compare with me. A small school is a small school. I am so bad that I can be here (I think ). J. I have been slow in primary school, slow in thinking, and generally cannot keep up with others. Feeling lost!