description language of the Internet Computer smart contracts -- How DFINITY uses procedure macro to extend Rust Yan Chen DFINITY Foundation ![Image](/uploads/documents/a/3/c/c/a3ccf56bf0b3cd44b910ffed3ac21c88/p2_1 Summary • Procedure macro allows us to extend Rust language safely without modifying the compiler • DFINITY has a Rust SDK to develop smart contracts on the Internet Computer • We did all the complicated