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The Metana Blog
Meet our authors →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.
Smart ContractsSolidity Libraries and Inheritance: A Beginner's Guide
Solidity, the programming language powering Ethereum smart contracts, offers robust tools for code reusability. Two key approaches dominate this landscape: inheritance and libraries. While both serve the purpose of…
Metana EditorialMarch 26, 2024Read
Smart ContractsUpgrading Smart Contracts? Here's All You Need To Know.
Smart contracts, the self-executing code on blockchains, have revolutionized various industries. They offer trust, transparency, and automation in transactions, forming the backbone of Decentralized Applications…
Metana EditorialMarch 25, 2024Read
Smart ContractsCommon Solidity Security Vulnerabilities & How to Avoid Them
TL;DR: Reentrancy Attacks : Prevent these by using checks-effects-interactions patterns, the nonReentrant modifier, or OpenZeppelin's reentrancyGuard. Integer Overflow/Underflow : Utilize safe math libraries like…
Metana EditorialMarch 25, 2024Read
Smart ContractsBest Practices for Smart Contract Testing & how to
Smart contracts, the self-executing code on blockchains, have revolutionized various industries. From decentralized finance (DeFi) to supply chain management, their potential is undeniable. However, with great power…
Metana EditorialMarch 22, 2024Read
Ethernaut WalkthroughEthernaut Level 2 Walkthrough: Fallout
The Ethernaut Level 2 offers a fascinating glimpse into the vulnerabilities that can arise from seemingly minor oversights in smart contract development. This article takes you through the challenge, revealing the…
Marko JaureguiMarch 21, 2024Read
Web3.0Web2 vs. Web3: What's the Difference? [The Breakthrough]
Remember that strange feeling when an ad pops up for that exact pair of shoes you just peeked at online? Web2, the internet we know today, thrives on personalization, but at what cost? Our data, from browsing habits to…
Metana EditorialMarch 20, 2024Read
Web3.0Top 10 Etherscan Alternatives in 2025
TL;DR Etherscan is the leading Ethereum block explorer, but alternatives offer unique features and specialized functionalities. Top options include BscScan (for Binance Smart Chain), Polygonscan (for Polygon), FTMScan…
Metana EditorialMarch 19, 2024Read
Full-StackWhat is Front End Development? Essential Guide for Beginners
Dive into the world of front-end development, where the magic of your favorite websites unfolds! Have you ever stopped to think about why websites grab your attention or why they're so easy to use? That's what we're…
Metana EditorialMarch 14, 2024Read
Smart ContractsSmart Contract Design Patterns in Solidity Explained!
TL;DR Smart Contract Design Patterns: Pre-defined solutions for common challenges in smart contract development, promoting secure, efficient, and reliable code. Key Patterns: Includes Factory, State Machine, Proxy,…
Metana EditorialMarch 13, 2024Read
Web3.0How Does a DAO Work?
Have you stumbled upon the acronym DAO and scratched your head in confusion? You're not alone. Decentralized Autonomous Organizations are the new hot topic in the web3 world, and for good reason. Imagine a club where…
Metana EditorialMarch 12, 2024Read
Full-StackHow Hard Is It to Learn JavaScript?
Ever witnessed a tragicomedy unfold on a computer screen? Imagine someone fervently clicking a JavaScript-generated pop-up, only to spawn more pop-ups with every desperate click. Hilarious, right? Unless you're the one…
Metana EditorialMarch 11, 2024Read
Smart ContractsThe 10 Best Web3 Wallets to Secure Your Crypto Today
TL;DR Web3 wallets store and manage crypto, NFTs, and connect to dApps. Types: Hot Wallets (MetaMask, Trust Wallet) – Convenient but less secure. Cold Wallets (Ledger, Trezor) – Highly secure, less convenient. Multi-Sig…
Nilupul WeerasingheMarch 7, 2024Read
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