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This article source code: GitHub. Click here || GitEE. Click here I. Observer Model 1. Concept Description The observer pattern is the object's behavior pattern, also known as the Publish/Subscribe pattern. The observer pattern defines a one-to-many dependency that allows multiple observer objects to simultaneously listen to a subject object, ...

This article source code: GitHub. Click here || GitEE. Click here Introduction of adapter mode 1. Basic concepts The adapter pattern transforms the interface of one class into another that the client expects, so that two classes that could not work together because of interface mismatch can work together. There are three types of adapter mod ...

Front-end implementation of dictionary tree This article demonstrates the front-end implementation of dictionary tree, which is also LeetCode No. 208, medium difficulty. Summary of topics Implement a Trie (prefix tree), including insert, search, and startsWith. Example:Trie trie = new Trie();trie.insert("apple");trie.search("apple"); ...

I was aware of the question before: Why doesn't Golang have the same functionality as in Python?So, after searching this question, we found that many people still have such questions. Let's talk about this topic today.If you find this article helpful, thank you! In is a very common function and may be called contains in some languages. Although ...

Fayson's github: https://github.com/fayson/cdh project Recommend the public number "Hadoop Practice", ID: gh_c4c535955d0f 1 Document Writing Purpose Task Background: We need to record the audit information of CDSW login, such as when th ...

Requirements encountered Some time ago, we need to quickly make a static display page, which requires a more responsive and beautiful. Because of the short time and the trouble of writing by oneself, I intend to go online to find ready-made words. In the middle of the way, I found several pages that were good, and then I began to think about ...

Source: logrocketAuthor: Maciej Cie lar Translator: Front-end wisdom In order to ensure readability, free translation is adopted instead of literal translation. For more quality articles, please Poke GitHub Blog More than a hundred high-quality articles a year are waiting for you! In order to give back to readers, Daqian World is held from time ...

Article directory Reference material Install VScode create shortcut Install golang install Configuring environment variables Create hello, world Install git install Create git local repository and bind Install go tools Install gotour The first ...

Comparison of mgo and mongo-go-driver Introduction to Library mgo: It's driven by MongoDB's Go language. It uses a simple API based on Go grammar to implement rich features and has been well tested. It's easy to use, the documents are enough, and it has been used in the early stage, but it's a pity that it's not maintained. Official website ...

Summary Firstly, the project overview is synchronized: Last article shared, routing Middleware - logging, this article we share: routing Middleware - catch exceptions. When the system is abnormal, prompt "system abnormal, please contact the administrator!" At the same time, panic alert mail is sent. What is an exception? The excepti ...