Imagine you have a collection of items, and each item has a different “weight,” or probability of being chosen. The weighted random algorithm is a method for selecting items from this collection according to their weights, essentially giving items with higher weights a greater chance of being chosen. …

According to the Go command documentation: "The go command caches build outputs for reuse in future builds." This means that the first time you run go build will take the most time, but all subsequent times will use the cache to reduce building time. Dockerfile without caching Let’s take a look at this…

Look at this article’s thumbnail; it’s generated dynamically when this post receives new reactions or comments. UPDATE: Medium has cached the image, so the thumbnail may not be up-to-date. You can view it here: Link. In this article, I will show you how to implement this feature on your own…

This is my Github Profile. The specific thing here is that the weather is updated every 6 hours automatically. In this article, I will walk you through how I did that! Let’s get started! 1. What is Github Actions GitHub Actions is a continuous integration and continuous delivery (CI/CD) platform that allows you to automate…

Explore advanced Go build techniques to create efficient, platform-specific binaries for your projects — I/ Build options The following are some of the most commonly used options for the go build command: -o: Specifies the output file name. The default output file name is the name of the main package, with the .exe suffix added on Windows. -v: Verbose output. This option prints the names of the…

How does limit-order feature work on DEXs? What is limit-order feature? Imagine you’re trading Token A at a price of $0.1, and your target is $1. Typically, you would need to set a price alert on a platform such as Coinmarketcap or Dexscreen and manually take profit when the price reaches your target. However…

Reentrancy vulnerability is a type of vulnerability that occurs when a contract calls an external contract in a way that allows the external contract to call back into the original contract before the original contract has finished executing. This can lead to unexpected and potentially malicious behavior. The problem…

If I get a JWT and can decode the payload, how is it secure? Why couldn’t I just grab the token out of the header, decode and change the user information in the payload, and then encode it again to access any person’s account? …

What is ERC-20/ERC -721/ERC-1155/…? ERC-20 A standard interface for fungible (interchangeable) tokens, like voting tokens, staking tokens or virtual currencies. ERC-721 A standard interface for non-fungible tokens, like a deed for artwork or a song. ERC-777 ERC-777 allows people to build extra functionality on top of tokens such as a mixer contract for improved transaction privacy or an emergency recover function to bail you out if you lose your private keys.