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Recently I saw an article about anti-L3ArticleWhen my hands itch, I will sacrifice some time to discuss this old topic. 1. What is Layer 3? Many people love to confuse the three-layer architecture with MVC, but we can consider their differences from the simplest perspective: In the design pattern, there is usu

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I recently read a book called design patterns. I have been looking for a good example to illustrate what a design pattern is? There was such a good example: First, someone came up with an organizational method: I opened a source file with a length of 0.13 million lines, which basically contains the C ++ source code. After careful observation, the original windowx

Ask a question in the NLP field. The question is like, "to-what extent would syntactic parsing is useful in a opinion extraction system and an information retrieval sy Stem? " How does the opinion extraction system,information retrieval system through syntactic parsing be implemented in the dry? Ask the great God of NLP to explain their details and fields.

Source: http://www.uml.org.cn/c%2B%2B/200810132.asp So far, I can still remember where I was when I had an epiphany and finally produced the following article. That was the summer of 1986. I served as a temporary consultant at the China Lake Naval Weapons Center in California. During this period, I had the honor to attend a seminar on Ada. During the discussion, an audience raised a representative question: "Are software developers engineers ?" I don't remember the answer at the time, but I stil

estimate there is no ops, these things are cumbersome, and need to practice, so it is recommended not to spend too much practice on this, understand can 4 for the design pattern is also known as the main, you may use the design pattern of the place

What the hell is a single case?write in frontIt is often heard that a single case, then what is the single case? And how do you use it? Or, what is its application scenario? In order to

PHP Regular Expressions/I,/is,/s,/isu, etc. what are these things?I is case insensitiveDot metacharacters (.) in S-mode match all characters, including line breakwhitespace characters in the X-mode are ignored except for escaped or are completely ignored outside of the character class, and all characters between # and the next newline character outside the non-es

Recently I saw an article on the anti-three layer, and my hands are also itchy. I will sacrifice some time to discuss this old topic. 1. What is Layer 3? Many people love to confuse the three-layer architecture with MVC, but we can consider their differences from the simplest perspective: In the design pattern, there is