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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 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.
Proxy Pattern State Integrity In Solidity upgradeable contracts using the UUPS (Universal Upgradeable Proxy Standard), the implementation contract contains the upgrade logic. While updating the implementation address is a standard operation, a mismatch in storage layout between the previous and new versions can lead to silent data corruption where state vari
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