Struct ConstructorOutputValue

pub struct ConstructorOutputValue<T>(/* private fields */);

Stores the actual value of the constructor return type.

Note

Currently the only allowed types are () and Result<(), E> where E is some unspecified error type. If the contract initializer returns Result::Err the utility method that is used to initialize an ink! smart contract will revert the state of the contract instantiation.

Implementations

impl<T> ConstructorOutputValue<T>

pub fn new(val: T) -> ConstructorOutputValue<T>

Stores the actual value of the constructor return type.

Trait Implementations

impl<C> ConstructorOutput<C> for ConstructorOutputValue<C>

type Error = &'static ()

The error type of the constructor return type.

fn as_result( &self, ) -> Result<&C, &<ConstructorOutputValue<C> as ConstructorOutput<C>>::Error>

Converts the return value into a Result instance.

const IS_RESULT: bool = false

Is true if Self is Result<C, E>.

impl<C, E> ConstructorOutput<C> for ConstructorOutputValue<Result<C, E>>

const IS_RESULT: bool = true

Is true if Self is Result<C, E>.

type Error = E

The error type of the constructor return type.

fn as_result( &self, ) -> Result<&C, &<ConstructorOutputValue<Result<C, E>> as ConstructorOutput<C>>::Error>

Converts the return value into a Result instance.