Trait juniper::IntoFieldResult

pub trait IntoFieldResult<T, S> {
    type Item;

    fn into_result(self) -> Result<T, FieldError<S>>;
}

Trait for wrapping [Stream] into Ok if it’s not Result.

Used in subscription macros when user can provide type alias for [Stream] or Result<Stream, _> and then a function on [Stream] should be called.

Required Associated Types

type Item

Type of items yielded by this [Stream].

Required Methods

fn into_result(self) -> Result<T, FieldError<S>>

Turns current [Stream] type into a generic Result.

Implementations on Foreign Types

impl<T, E, S> IntoFieldResult<T, S> for Result<T, E>where
    T: IntoFieldResult<T, S>,
    E: IntoFieldError<S>,

type Item = <T as IntoFieldResult<T, S>>::Item

fn into_result(self) -> Result<T, FieldError<S>>

Implementors

impl<T, S> IntoFieldResult<T, S> for Twhere
    T: Stream,

type Item = <T as Stream>::Item