Types

RustResult<T, E>​

This type models a Result<T, E> message response in ink! contracts starting in v4.0.0. Prior to ink! v4.0.0 any contract that returned a Result<T, E> in Rust would return T or undefined. See pickResultOk and pickResultErr, which can be used with contracts that return a Result<T, E>.

type RustResult<T, E> = { Ok?: T; Err?: E };