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The Metana Blog
Guides, tutorials & career tips.
Expert-written guides on Full-Stack Development, Web3, AI, Data, and Cybersecurity — built for aspiring engineers and tech professionals ready to level up.
Full-StackWhat is Fuzzing? (Fuzz Testing) Simplifying Testing with Mocks
Imagine testing software by throwing unexpected scenarios at it, like giving a map app nonsensical directions or feeding gibberish to a search engine. That’s the essence of fuzzing, a powerful automated testing technique
Metana EditorialJune 3, 2024Read
Full-StackJavascript setTimeout(): How to Delay Code Execution
TL;DR setTimeout is a JavaScript function that allows you to schedule the execution of code after a specified delay. It’s useful for creating smoother user experiences, such as simulating delays, fading elements, showing
Metana EditorialMay 31, 2024Read
Full-StackBcrypt and JWT: Web App Security
TL;DR In today’s digital world, security is paramount. As we increasingly rely on web applications to store sensitive information, it’s crucial to ensure that this data is protected from unauthorized access. Two essentia
Metana EditorialMay 30, 2024Read
Web3.0How to Launch a Web3 Project Successfully
Web3 is an exciting and closely-knit space filled with prospects, where users gain ownership and change ways of interacting online. If you have an outstanding concept to share and align with the increasing development in
Metana EditorialMay 29, 2024Read
BlockchainDelegatecall in Solidity: Your Simplified Guide
Delegatecall is a powerful but intricate feature in Solidity that allows contracts to delegate execution to other contracts. Understanding delegatecalls is crucial for building advanced smart contract functionalities lik
Metana EditorialMay 28, 2024Read
Full-StackWhat is Node.js? Explained Simply
Imagine a world where you can leverage the same language, JavaScript, that brings websites to life, to power the engines behind those websites. That’s the magic of Node.js! In this comprehensive guide, we’ll embark on a
Metana EditorialMay 27, 2024Read
Full-StackJavaScript and JSON [Examples in Action]
The internet thrives on data exchange. From social media updates to online shopping carts, information constantly zips between servers and your device. But how does this data travel in a way that different systems can un
Metana EditorialMay 22, 2024Read
Ethernaut WalkthroughEthernaut Level 9 Walkthrough: King
In this challenge, we’ll dive into smart contracts’ payment vulnerability and essential security practices to prevent such issues. By the end of ethernaut level 9, you’ll be equipped to both exploit and safeguard the sma
Vinh TranMay 20, 2024Read
Ethernaut WalkthroughEthernaut Level 8 Walkthrough: Vault
Ethernaut challenges, akin to a hacking Capture The Flag (CTF) for Web3 enthusiasts, provide an immersive platform to explore Ethereum and Solidity programming. Each challenge presents a unique smart contract puzzle, tes
Rupam RoychoudhuryMay 19, 2024Read
BlockchainLow Level Call vs High Level Call in Solidity [Simplified]
TL;DR Solidity contracts interact with other contracts using high-level calls (via interfaces) or low-level calls (call, delegatecall, staticcall). Key Differences: Best Practices: In Solidity, contracts can interact wit
Metana EditorialMay 17, 2024Read
Web3.0Metana Reviews: Grads Share Their Journeys
Metana’s Bootcamp is rewriting the rules of blockchain education by focusing on personal growth and providing each and every student with the skills, industry connections, and confidence needed to succeed in the fast-cha
Metana EditorialMay 17, 2024Read
Full-StackCommon Git Errors & How to Fix Them
For developers, Git is the ultimate companion. It acts as a version control system, meticulously tracking changes made to your codebase. But even the most seasoned Git users encounter errors from time to time. Fear not,
Metana EditorialMay 15, 2024Read
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