Browsing Tag
solidity
6 posts
Gas Estimation Failed
Hello everyone. I am getting the “Gas estimation failed” error while trying to solve the last 3 levels…
A sleek solidity cheatsheet
part 1 of a 5 part series on essentials for solidity devs solidity_cheatsheet.sol cryptography_cheatsheet.sol assembly_cheatsheet.sol designPatterns_cheatsheet.sol security_cheatsheet.sol It…
How to Write a Token Price Oracle Smart Contract
Introduction In the rapidly evolving DeFi ecosystem, accurate and reliable token price data is fundamental for various applications…
A Missed Modifier, A Race Against Time: The Genesis of a Handy Online Smart Contract Editor
Navigating the thrilling yet challenging realm of Solidity can sometimes throw curveballs our way. One such unexpected moment…
How to Build an Answer-to-Earn Platform with React, Solidity, and CometChat
What you will be building, see the demo Sepolia Testnet and git repo. Introduction If you’re looking to…
Re-entrancy attacks in Ethereum smart contrats
A re-entrancy attack is a type of vulnerability that can occur in smart contracts that allow an attacker…
