Type Definition concordium_std::CallContractResult

pub type CallContractResult<A> = Result<(bool, Option<A>), CallContractError<A>>;

A wrapper around Result that fixes the error variant to CallContractError, and the result to (bool, Option<A>). If the result is Ok then the boolean indicates whether the state was modified or not, and the second item is the actual return value, which is present (i.e., Some) if and only if a V1 contract was invoked.