Trait rabbitmq_stream_protocol::utils::TupleMapperFirst

pub trait TupleMapperFirst<Input, Output, Result>
where
    Self: Sized,
{
    // Required method
    fn map_first(self, mapper: impl Fn(Input) -> Output) -> Result;
}

Required Methods

fn map_first(self, mapper: impl Fn(Input) -> Output) -> Result

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl<S, E, I, O> TupleMapperFirst<I, O, Result<(O, S), E>> for Result<(I, S), E>

fn map_first(self, mapper: impl Fn(I) -> O) -> Result<(O, S), E>

Implementors