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Learn how to reliably pull historic Transfer events from an ERC‑20 contract using web3.js, bounded block windows, a confirmation buffer, and a resumable checkpoint. Handle provider limits, reorgs, and API differences between v1 and v4.
A practical guide to separating expected failures from internal bugs in Vyper contracts using raise and assert, including verification steps and recovery options.
Stop relying on mocks for external contracts. Learn how to use Hardhat Network Forking to clone mainnet state for deterministic, realistic integration testing.
Learn how to implement Mainnet Forking in Hardhat to test smart contracts against real-world blockchain state without risking production funds.
Learn how to use Solidity's unchecked blocks to eliminate redundant overflow checks and reduce gas costs in high-frequency arithmetic operations.
Vyper's @nonreentrant decorator adds a storage-backed lock to prevent reentrancy, but only for functions sharing the same key. Learn how to apply it correctly alongside checks-effects-interactions, what it costs, and how to verify it on a pinned compiler.
Decide between Vyper immutable and constant by asking where the value comes from. Compare storage, read gas and flexibility, with an example and verification steps.
Learn how Solidity custom errors replace expensive string reverts, reduce gas, and stay decodable by tooling. Includes a practical example, verification steps, and trade‑off discussion.
Learn how Vyper’s built‑in @nonreentrant decorator provides compile‑time reentrancy protection, see a concrete vault example, and understand its gas cost and scope limits.
vyper
hardhat
solidity
web3js