Trait CanUpcast 

pub trait CanUpcast<Target> {
    // Required method
    fn upcast(self, _tag: PhantomData<Target>) -> Target;
}

Required Methods

fn upcast(self, _tag: PhantomData<Target>) -> Target

Implementors

impl<Context, Source, Target, Remainder> CanUpcast<Target> for Context

where Context: HasFields + HasExtractor<Extractor = Source>, <Context as HasFields>::Fields: FieldsExtractor<Source, Target, Remainder = Remainder>, Remainder: FinalizeExtract,