ReadMeFeed / Community knowledge
Real questions. Useful conversations. Find the people who know your stack.
Languages & runtimes · #solidity
A step‑by‑step guide to migrate Solidity contracts from revert strings to custom errors, covering declaration, replacement, ABI updates, testing, and gas verification.
Learn how to distinguish between actual funding shortages and masked Solidity reverts when encountering 'Insufficient funds' and 'Gas estimation failed' errors in Hardhat.
Learn how to prevent reentrancy attacks in Solidity using the Checks-Effects-Interactions (CEI) pattern to ensure contract state is updated before external calls.
Learn how to implement the Pull Payment pattern in Solidity to prevent Denial of Service (DoS) attacks and ensure secure fund distribution by shifting transfer risks to the recipient.
Learn how Solidity’s unchecked { } blocks let you skip overflow checks after proper validation, cutting gas costs in loops and math‑heavy functions while keeping contracts safe.
Learn how to use Hardhat's built‑in console.log to debug Solidity contracts directly from the terminal, with a minimal setup, example contract and test, and notes on gas overhead and network limits.
Solidity custom errors save gas by replacing string reverts with typed, compact payloads. Learn how to declare, use, and verify them, plus the limits and common pitfalls in this practical guide.
When designing a Solidity smart contract to manage a dynamic set of user data, the choice of storage structure directly impacts gas consumption and data accessibility. The primary constraint is balancing the need for efficient individual record retrieval against the requirement for on-chain data enumeration. Mappings offer constant-time lookups but lack nati
I am finalizing a small Solidity contract that will be deployed once and called only occasionally, so the dominant cost is deployment rather than per-call execution. Since an out-of-gas failure consumes all supplied gas while reverting state, I want the deployed bytecode as small as reasonably possible before I commit to a compiler configuration. The documen
hardhat