Calling Other Contracts

Mike's comments

4. Calling other Contracts
   • Contract Address & Function Selector
     • (Noting that function selectors are only part of the protocol for private functions)
   • Importing another Contract's Interface
   • External call to self
     • E.g. recursive token spends
     • Limitations of this syntax (ugly)
   • Call
   • Staticcall
   • Delegatecall
     • It does not exist. Point the user to contract upgrades, in the "deploy" section.
   • Calling Private Getter Functions of other Contracts
     • Restrictions, to prevent private state leakage.
   • Private -> Public Calls
     • Privacy Leakage
     • Avoid Passing Addresses
       • Setting msg_sender to Option::none
       • Stealthifying Addresses
         • Custom Stealth Addresses

Notes from chat with Mike

• Also include other call types?