Trait EnvironmentProvider

pub trait EnvironmentProvider<Key: Hash + Eq> {
    type Error;

    // Required method
    fn maybe_get(
        &self,
        key: &Key,
    ) -> Result<Option<Cow<'_, PolymorphicType>>, Self::Error>;

    // Provided method
    fn get(&self, key: &Key) -> Option<Cow<'_, PolymorphicType>>
       where Self::Error: Debug { ... }
}

Required Associated Types

type Error

Required Methods

fn maybe_get( &self, key: &Key, ) -> Result<Option<Cow<'_, PolymorphicType>>, Self::Error>

Provided Methods

fn get(&self, key: &Key) -> Option<Cow<'_, PolymorphicType>>

where Self::Error: Debug,

👎Deprecated

Implementors

impl EnvironmentProvider<Var> for Environment

type Error = Infallible