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preface hello everyone! I'm classmate pear! I hope you can support me! ha-ha To thank everyone who cares about me: 💓 The project source code of each article is shared free of charge 💓👇👇👇👇 Click here for the blue font. What source code do you need? Remember to say the title and name! I can also write private letters! Xiaobian h ...

I preface Java streaming has been a feature for a long time, which can greatly reduce our code, and parallel processing can use multiple processor cores in some scenarios, which can greatly improve the performance However, it will be difficult for novices to use Stream syntax. Take a look at this feature from shallow to deep in this document ...

1, Foreword The powerful effect of css3 animation is self-evident. Since its emergence, it has been hot, and its advantages and disadvantages with js animation have always been the topic of debate in the front-end industry. There is no doubt that the emergence of css3 animation reduces the difficulty of realizing animation effect to a certain ...

Intersection selectorUnion selectorDescendant Selectors Child Selector Adjacent Sibling Selectors attribute selectors Intersection selector The intersection selector consists of two selectors directly connected. The first selector must be an element selector, and the second selector must be a class selector or ID selector. The two selectors ...

What is authoring?Authing is the first developer centric full scene identity cloud product in China. It integrates all mainstream identity authentication protocols to provide enterprises and developers with perfect and secure user authentication and access management services.Taking "API First" as the product cornerstone, all commonly ...

1, Foreword The powerful effect of css3 animation is self-evident. Since its emergence, it has been hot, and its advantages and disadvantages with js animation have always been the topic of debate in the front-end industry. There is no doubt that the emergence of css3 animation reduces the difficulty of realizing animation effect to a certain ...

Production consumer queue is used for multi node distributed data structure, production and consumption data. The producer creates a data object and puts it in the queue; The consumer takes a data object from the queue and processes it. In ZooKeeper, queues can be implemented by creating multiple child nodes under a container node; When creatin ...

Intersection selectorUnion selectorDescendant Selectors Child Selector Adjacent Sibling Selectors attribute selectors Intersection selector The intersection selector consists of two selectors directly connected. The first selector must be an element selector, and the second selector must be a class selector or ID selector. The two selectors ...

preface You have leaders who like to read the code. My leaders like to read the code I write. If you have nothing to do, they like to discuss with me how to write the best. Hahaha... Very good. Today, let's take a look at the third-party open source library that can save 90% of overtime. The first introduction must be the Commons Library un ...

1. Background We usually use three crawler libraries when crawling web pages: requests, scratch and selenium. Requests are generally used for small crawlers, while scratch is used to build large crawler projects, while selenium is mainly used to deal with responsible pages (complex js rendered pages, requests are very difficult to construct, o ...