Trait AsyncTryFromEnv 

pub trait AsyncTryFromEnv {
    type Error;

    // Required method
    fn new_from_env<'life0, 'async_trait>(
        var_name: &'life0 str,
    ) -> Pin<Box<dyn Future<Output = Result<Self, Self::Error>> + Send + 'async_trait>>
       where 'life0: 'async_trait,
             Self: Sized + 'async_trait;
}

Trait for asynchronously creating Self specifically from an environment variable name.

Required Associated Types

type Error

Required Methods

fn new_from_env<'life0, 'async_trait>( var_name: &'life0 str, ) -> Pin<Box<dyn Future<Output = Result<Self, Self::Error>> + Send + 'async_trait>>

where 'life0: 'async_trait, Self: Sized + 'async_trait,

Creates an instance of Self by reading an environment variable asynchronously (if needed).

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors