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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web3jsVyper'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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