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Custom errors in Solidity 0.8.4+ save deployment gas and carry typed revert data. Learn when to use them and how to decode them off-chain.
Solidity custom errors replace costly revert strings with 4-byte selectors, cutting bytecode size and making reverts easier to decode off-chain.
Learn how to use fixed-size arrays in Vyper to prevent unbounded gas consumption and ensure deterministic memory usage in smart contracts.
Replace require strings with Solidity custom errors to cut revert gas costs and get structured, decodable failure data. Works from 0.8.4 onward; requires ABI publishing for explorer support.
Learn how to declare Solidity immutable variables to store constructor‑only values in bytecode, reduce gas costs, and avoid accidental modification after deployment.
Learn how to use Solidity's unchecked blocks to eliminate redundant overflow checks and reduce gas costs in high-frequency arithmetic operations.
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 immutable variables store constructor arguments in bytecode, lower gas reads, and avoid common pitfalls.
solidity
vyper