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Article0 replies3,032 followingPosted 08 Jul 2026, 07:24 UTC19.7K views4,155 votes

Simulating Production State with Hardhat Mainnet Forking

Learn how to use Hardhat Mainnet Forking to simulate production environments, pin block numbers for deterministic testing, and impersonate live accounts for administrative testing.

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ethereum-development

hardhat smart-contracts

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Tasadduq Burneyowner

Started08 Jul 2026, 07:24 UTC

Level 38Owner35,775 rep points

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Article0 replies1,300 followingPosted 23 Aug 2025, 13:00 UTC136.9K views3,918 votes

Optimizing Solidity with the `unchecked` Block: When and How to Bypass Overflow Checks

Learn how Solidity’s `unchecked` block lets you skip automatic overflow checks for gas savings, when it’s safe to use, and a practical token transfer example that shows the trade‑offs and how to audit the code.

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solidity gas-optimization smart-contracts

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Article0 replies4,536 followingPosted 27 Dec 2025, 16:38 UTC118.5K views4,878 votes

Consuming Ethereum Contract Events with web3.js 4.x: Subscriptions vs Polling, and Where the Trust Boundary Sits

An architecture note on consuming Ethereum contract events with web3.js 4.x: why checkpointed getLogs polling beats naive subscriptions, how reorgs and the RPC trust boundary shape the design, and when to move to an indexer.

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web3js smart-contracts ethereum

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Article0 replies1,495 followingPosted 23 Sept 2025, 01:15 UTC68K views1,282 votes

Sending Web3.js Contract Calls with Automatic Gas Estimation: A Practical Guide

Learn how to use web3.js to send a contract transaction with automatic gas estimation, including code, pitfalls, and verification steps.

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gas-estimation

web3js smart-contracts

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Article0 replies3,151 followingPosted 09 Mar 2026, 13:11 UTC70.1K views2,551 votes

Vyper's @nonreentrant Decorator: Built-In Reentrancy Protection That Trades Gas for Safety

Vyper's @nonreentrant decorator gives you a storage-backed mutex with one line of code. This post shows a worked withdraw() example comparing manual checks-effects-interactions vs. the decorator, the gas/composability trade-offs, and a verification checklist to prove the lock actually holds.

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reentrancy evm

vyper

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Article0 replies2,172 followingPosted 22 Aug 2026, 13:16 UTC39.4K views1,934 votes

What Clarity's 'Decidable' Design Actually Buys You as a Smart Contract Engineer

Clarity's decidable, interpreted design means contract cost and termination are knowable before execution. Here's what that buys you — and where bounded iteration pushes back.

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blockchain-development

clarity smart-contracts

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Article0 replies3,803 followingPosted 05 Aug 2026, 09:16 UTC25.4K views3,106 votes

Migrating Solidity Reverts to Custom Errors: A Practical Guide

Replace require strings with Solidity custom errors (0.8.4+): declaration, revert syntax, Foundry/ethers decoding, gas verification, and migration pitfalls.

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solidity gas-optimization smart-contracts

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Article0 replies2,481 followingPosted 05 Jul 2026, 23:06 UTC57.1K views583 votes

Reading Contract State and Events with web3.js: call vs send vs getPastEvents

A practical web3.js guide to choosing between .call(), .send(), and getPastEvents — with version caveats, gas estimation, bounded log queries, and polling vs WebSocket trade-offs.

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event-logs

web3js smart-contracts

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Article0 replies1,679 followingPosted 18 Feb 2026, 04:51 UTC18K views3,995 votes

Using Solidity Custom Errors for Gas‑Efficient Reverts

Learn how Solidity custom errors (since 0.8.4) replace costly revert strings with cheap, typed data, saving gas while keeping error messages readable off‑chain.

Community & Careers · Blog

solidity gas-optimization smart-contracts