I would like to know how some developers achieve amazing functionality with core technology. My programming background was based only on high-level programming languages such as C # and java, and it is very difficult for me to “go back” and learn c-based technologies, such as the basic graphic elements, as well as the fact that I can find books, who will tell you the main graphics but cannot find any basic fundamentals, so when I read about peer-to-peer point and socket, I feel lost because the CFNetwork header file is not enough for someone who has no experience in UNIX sockets . So, back to the question, what resources should I look for in order to learn the basic framework, and then CFNetwork?
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