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For the use of multithreading, this paper briefly introduces several ways of using multithreading, and uses several simple examples to introduce multithreading. The compiler is visual studio. 1, AsyncFuture The knowledge points used are std::async and std::future 1. std::async function prototype template<class Fn, class... Args> futur ...

prefaceIn this article, we will learn how to use Promise and how to implement our own Promise. The explanation is very clear. It will be implemented step by step in the whole process, with detailed notes and principle explanation.If you think this article is helpful to you, ❤️ Follow + like ❤️ Encourage the author, the official account, the fir ...

Promise meaning Promise is a solution for asynchronous programming. Promise is simply a container that holds the results of an event (usually an asynchronous operation) that will not end in the future. Syntactically speaking, Promise is an object from which you can get the message of asynchronous operation. Promise provides a unified API, and ...

prefacePromise is a very common concept in front-end interview and work. There is also a market for the handwritten implementation of its various methods. Today, I will summarize the simple implementation of promise's basic methods.catch() methodThe catch method is an encapsulation of the then method and is only used to receive error messages i ...

Author: D827Source: Hang Seng LIGHT cloud communityNone of the functions will not be used after reading the source code. So after reading this article, I hope it can help you completely master Promise.Promise introductionPromise object is a solution to realize asynchrony provided by ES6. It enables asynchronous methods to return values like syn ...

Promise is a constructor for asynchronous requests introduced by es6 to help solve the problem of callback hell. The following content will customize the implementation of promise, which only includes basic use, so some boundary conditions are not taken into account.If you are not familiar with promise usage, you can moveUnderstanding and use o ...

preface(ಥ﹏ಥ) the interviewer asked him to write a Promise.all about a real event that really happened to a friend. The friend didn't play well on the spot and didn't write it out. Afterwards, he asked the interviewer for a vague evaluation that the foundation was not solid enough and he didn't master the principle knowledge... Of course, this ...

1, Front and rear end interaction Foundation 1. Concept What is front-end and back-end interaction? In fact, it refers to the process that the front end sends a request to the back end through the interface, the back end returns the corresponding data after receiving the request, and the front end makes a corresponding display or jump accordi ...

Take an example I want to print 1 after 1s, 2 after 1s, and 3 after 3s Traditional asynchronous programming implementation console.log(new Date) setTimeout(()=>{ console.log(new Date,1) setTimeout(()=>{ console.log(new Date,2) setTimeout(()=>{ console.log(new Date,3) },3000) },2000) },1000)   Promise implement ...

Reference for instance object, function object, callback and other related knowledge: this Promise introduction Promise is a new technology (ES6 specification) and a new solution for asynchronous programming in JS (the old solution was to simply use callback functions).Grammatically, Promise is a constructor (I have all, reject and resolv ...