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In Spring Security source analysis one: Spring Security authentication process and Spring Security source analysis two: Spring Security authorization process in two chapters. We've looked at how Spring Security handles username and password logins in detail. In this chapter we will simulate...

In this article, we'll look at generators introduced in ECMAScript 6. Take a look at what it is, then use a few examples to illustrate how it can be used. A generator is a function that can be used to control an iterator. It can be paused at any time and resumed at any time. The above description does not prove much, let's take a look at some examples...

During my trip to Austria, I visited the Austrian National Library in Vienna. The Hall of Congress, in particular, is a stunning space that feels like something out of an Indiana Jones movie. The space around the room is that these doors are mounted on shelves, and it's easy to imagine what secrets lie behind them. It turns out, however, that they are simply libraries. Let's say we have an application that tracks the library...

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To support library 27.1.0, I have rewritten the internal structure of the LoaderManager, on which the Loaders API is based. I also want to explain why these changes are made and what to expect next. In the beginning, Loader and Fragment are closely linked. This means that in order to support Loader, Frag...

Page information is easier to understand if it is grouped into logical areas. Please set the Padding to 120 to 180 pixels and separate the different text areas by the background color. There are no margins between groups of related information, and the design requires color blocks to divide the page into logical areas. So, for now, these letters...

When you are working on a project, you often run into the problem of asynchrony. You have to control the order of multiple asynchrony requests. What should you do? How to deal with callback hell involving multiple callbacks? The ES2017 standard introduces async functions to make asynchronous operations more convenient. This article mainly introduces the basic usage of async/await, parallel tasks and matters needing attention. ES...

As programmers develop experience, they often develop the best solution to a particular type of problem, which is often more effective than other solutions and even becomes the standard solution to a particular problem. So for this topic, we want you to divide it

In essence, thinking like a programmer is a more effective way to solve problems. With this article, my goal is to teach you to think that way. At the end of the day, you'll have a better idea of what steps you need to take to become a better problem-solver. Problem solving is the most fundamental meta-skill. All of us have problems big and small. And a lot of the time, I...