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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.
Polygon zkEVM lets you run unmodified Solidity on a zk‑rollup with near‑zero‑gas proofs. This guide walks through a real migration, shows how to estimate costs, and explains the central sequencer risk and 7‑day withdrawal delay that shape your architecture.
Immutable variables let Vyper contracts embed constants in bytecode, cutting read costs and storage use. This post explains how they work, shows a real example, highlights trade‑offs, and tells you how to verify the savings in your own project.
When a Cairo 2.0 contract throws a ‘range_check failed’ or ‘builtin not found’ error, it’s usually a mis‑configured or missing range_check builtin. This guide walks through the symptoms, root causes, step‑by‑step checks, fixes, and when to seek help.
hardhat
solidity
vyper
polygon
cairo