A comprehensive guide to Promises, Async, and Await in JavaScript
DEV Community
by vaatiesther
1h ago
How JavaScript works under the Hood By default, Javascript is single-threaded, meaning the JavaScript engine can only execute one thing at a time. i.e., the code is executed sequentially, line by line. JavaScript uses the call stack, which is a data structure that keeps track of function calls in your code, and since JavaScript is single-threaded, it also means that there is only one call stack . Because of the single call stack, only one function can be executed at a time. Consider the example below: function fetchData() { console.log("Fetching data from API..."); console.log ..read more
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Introducing Rails Icons: One Gem to Rule Them All
DEV Community
by Rails Designer
1h ago
This article was first published on Rails Designer Icons are critical for any app's UI. They enhance a web app's usability and aesthetic appeal, making a lot/complex information more accessible and navigation more intuitive for users. I don't run one app where I don't use icons. Take a look at this example of one of my SaaS': Even without being a designer, you can see the one with the (SVG) icons is easier to digest and it sure does look more appealing too! Over the years, I've switched between multiple libraries. But I've been using Heroicons mostly in my latest products. But no matter how m ..read more
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Optimizing Vue.js Performance with v-if and v-show Directives
DEV Community
by AMatisse
1h ago
Vue.js is a versatile JavaScript framework, but maximizing its performance requires strategic use of directives. In this article, we'll delve into optimizing Vue.js applications by leveraging the v-if and v-show directives. Understanding when and how to use these directives can significantly impact your application's rendering efficiency. 1. Understanding the v-if Directive The v-if directive is a conditional rendering directive in Vue.js. It removes or recreates elements based on the truthiness of the expression it binds to. Learn how to effectively use v-if to conditionally render elements ..read more
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What set of workout weights should I get?
DEV Community
by Jasmine
1h ago
A workout weights set typically includes a variety of weight plates, a barbell, dumbbells, and sometimes additional accessories like collars or a weightlifting bench. Here's a breakdown of what you might find in a standard workout weight set: Weight Plates These are the primary components of any weightlifting set. They come in various sizes and weights, such as 2.5 lbs, 5 lbs, 10 lbs, 25 lbs, and 45 lbs. Weight plates are used to load onto barbells or dumbbells to increase resistance during exercises. Barbell A barbell is a long metal bar that you load with weight plates on both ends. It's com ..read more
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? 6 open-source libraries you must know in 2024 ??
DEV Community
by Ankur Tyagi
1h ago
Last week I have discovered some awesome libraries! Check them, use them, help them with a star ⭐️ Coolify Introducing Coolify, an open-source and self-hostable alternative to Heroku, Netlify, and Vercel Developed by Andras Bacsai, this innovative platform empowers users to deploy and manage their web applications with ease, all while maintaining full control over their infrastructure. Key Features: Self-Hostable: With Coolify, you have the freedom to host your web applications on your own servers, giving you complete control over your deployment environment. Easy Deployment: The platfor ..read more
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If a miner do manipulation in the Blockchain what happens ??
DEV Community
by vishwajeet
1h ago
If a miner attempts to manipulate the blockchain by altering transactions or adding fraudulent data, the decentralized nature of the blockchain helps to prevent such manipulation. Other nodes in the network validate and verify transactions independently, so any attempt at manipulation would be detected and rejected by the majority of the network. Additionally, the consensus mechanism, such as Proof of Work or Proof of Stake, ensures that miners must invest resources or stake tokens to participate, making it economically impractical to manipulate the blockchain ..read more
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Kakizu: Turn your sketches into beautiful AI generated art using Cloudflare!
DEV Community
by ashish
1h ago
This is a submission for the Cloudflare AI Challenge. What I Built Hey there, creative minds! I've cooked up something super cool called Kakizu that's gonna blow your artistic socks off. Get ready to turn those quirky doodles and sketches into mind-blowing AI-generated artworks with just a few clicks! Kakizu is all about letting your imagination run wild on its rad drawing canvas. Whether you're a seasoned artist or just someone who loves doodling during boring meetings, this is your chance to let those crayon scribbles shine. Once you've worked your sketch magic, get ready for the real showst ..read more
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How to Replace a Null with the Corresponding Value in the Previous Record
DEV Community
by Judy
1h ago
We have a database table HEADER, which has data as follows: There is no connection between ENG1, ENG2 and ENG3, and there are null values under them. We can record them as ENGX. We are trying to sort the table by UPDATEDDATE, and, if ENGX in the current record is null, enter ENGX in the previous record in. Below is the desired result table: SQL written in SQL Server: SELECT H.*, MAX(ENG1) OVER (PARTITION BY NAME, GRP1 ) AS IMPUTED_ENG1 , MAX(ENG2) OVER (PARTITION BY NAME, GRP2 ) AS IMPUTED_ENG2 , MAX(ENG3) OVER (PARTITION BY NAME, GRP3 ) AS IMPUTED_ENG3 FROM ..read more
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URL shortening using CLI
DEV Community
by Sourab Pramanik
1h ago
This project is built using Vercel, Neon, and Rust. It is a link-managing application that has a CLI to create, read, and delete short URLs. I have used Vercel to deploy a serverless function for redirection to long URLs, it is easy, fast, and free. What is a URL shortener and why do we need it? URL shortener is a service that is used to create short URLs that work as an alias for long URLs, this is important when you have a long URL (e.g. https://chart.apis.google.com/chart?chs=500x500&chma=0,0,100,100&cht=p&chco=FF0000%2CFFFF00%7CFF8000%2C00FF00%7C00FF00%2C0000FF&...) and sha ..read more
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Most Useful CI/CD Tools for DevOps
DEV Community
by Spacelift team
1h ago
Continuous integration (CI) and continuous delivery (CD) are the unsung heroes that operate behind the scenes of every successful company. CI is a software development practice where engineers merge their code into a central repository multiple times a day. After a pull request is open and after a merge is done, automated builds and tests are triggered automatically to ensure the functionality of the code. This approach promotes a collaborative environment and also helps in identifying issues early on, minimizing the risk of having issues propagated through different environments. CD is the na ..read more
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