• Smart Contract
• Solidity Patterns

Solidity Patterns

This chapter talks about Solidity Pattern that allows someone to write secure code. Mainly takeaways from this page, strongly recommend to give it a read and get familiar with it.

Highlight

• Checks Effects Interactions: prevents reentrancy attack
• Secure Ether Transfer: use transfer() rather than send(), also prevent the reentrancy attack
• Randomness and Oracle
• Proxy Delegate: for contract upgradability
• Tight Variable Packing: pack variables into a word (32 bytes, i.e. uint256) as much as you can to save storage and gas

Other

solcurity also is a checklist on coding decision for economic and security concerns.

useful-solidity-patterns by dragonfly-xyz also have a list on useful solidity patterns.

Solidity Security by Sigma Prime writes the anti-patterns of Solidity.