mvx_sc_best_practices

To prevent reentrancy attacks in a MultiversX Rust smart contract, implement the Checks-Effects-Interactions pattern. This ensures state changes are fully applied before any external calls are made, protecting against malicious re-entry.

Optimize gas usage for MultiversX smart contract storage by utilizing cache-based gas optimization patterns and selecting efficient mappers like `SingleValueMapper` or `VecMapper`. This reduces redundant read and write operations on-chain.

Mandos testing for MultiversX smart contracts works by executing whitebox scenarios to validate contract logic and state transitions. It provides a framework to simulate blockchain interactions and verify expected outcomes during development.

You should use `BigUint` for arithmetic safety in MultiversX Rust contracts to handle large numeric values securely. It prevents overflow and underflow vulnerabilities that can occur with standard integer types during token calculations.

Common pitfalls with token identifier validation in MultiversX smart contracts include failing to verify the token type before processing transfers. Proper validation ensures contracts only interact with expected tokens, preventing unauthorized asset manipulation.