Yes, it's a really good. 10/10 would recommend.
Many people say category theory is important. Which part of your book is about this?
I haven't read it all. They do mention some concepts in every chapter but not explicitly.
Personally I haven't studied much of category theory, but the little I know turned out to be useful.
If you want to get into category theory one of the resources is: Category Theory for programmers, it's also available online.
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