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writing alien code..
Kiril Kirkov
kirilkirkov
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writing alien code..
💻 Professional Full Stack Web Developer with knowledge of PHP, SQL, NodeJS, VueJS, ReactJS/Native, WordPress, HTML, CSS, Linux Servers, etc.
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Handling Asynchronous State Updates in React: The Functional Form of setState
Do you know that if you call setIndexes([...indexes, index]); too fast.. one after another time.. its possible only to update the array, but not to increment it?
The problem you're facing may be due to the asynchronous nature of the setState function in React. When using the useState hook, the setState function doesn't update the state immediately, but during the next render of the component.
Your logic for adding values to the setIndexes array can looks correct but.. However, when you use setIndexes([...indexes, index]), you're actually accessing the previous value of uploadedFiles, which may not be updated yet.
To solve this issue, you can use the functional form of setState, where you take the previous value of the indexes array and add the new value to it. Here's an example:
How public and private class access modifiers are compiled to javascript in typescript
public: The public access modifier in TypeScript does not result in any changes during compilation.
This is because in JavaScript, all class members are by default considered public.
Therefore, a public member in a TypeScript class remains unchanged in the resulting JavaScript code.
За да използвате проверка за логнат потребител за всяка страница в Next.js, можете да използвате High Order Component (HOC) или wrapper component, който да включва функцията getServerSideProps. Така ще можете да използвате тази проверка на всяка страница, която искате да бъде достъпна само за логнати потребители.
Ето пример как може да създадете HOC, който да включва getServerSideProps за проверка на потребителското състояние:
PHP по подразбиране използва един процес за всяка заявка за уебстраница.
Този процес съдържа единствена нишка за обработка на заявката и това е единствената нишка,
която може да използва PHP скрипта.
Node.js от друга страна използва един процес с множество нишки за обработка на заявки.
Тези нишки са създадени от Node.js за да могат да обработват заявки едновременно,
като всеки потребителски заявка се обработва от отделна нишка.
Explain Promises with Async/Await and new Promise constructor. How to handle reject with Await keyword
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