Building on Ethereum: writing Solidity, choosing tooling, keeping gas costs down, and avoiding the vulnerabilities that drain contracts.
4 articles
Blockchain9 min read
A practical guide to cutting gas costs in Solidity: how storage reads and writes are priced, packing variables, constant and immutable, calldata, caching in loops, custom errors, events, unchecked math, measuring with Foundry, and when to leave the code alone.
Blockchain9 min read
A practical comparison of Hardhat and Foundry for Solidity development: writing tests in TypeScript or Solidity, speed, fuzz and invariant testing, mainnet forking, deployment with Ignition or forge script, plugins, Hardhat 3, and running both in one repo.
Blockchain11 min read
The Solidity bugs behind most smart contract losses, from reentrancy and missing access control to price oracle manipulation and signature replay, plus the testing tools and audit process that catch them before deployment.
Blockchain10 min read
A practical path from Solidity code to a verified contract on the Sepolia testnet: setting up Hardhat, using OpenZeppelin, writing tests, avoiding reentrancy and access control mistakes, keeping keys safe, and preparing for mainnet.
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