[][src]Struct trust_dns_resolver::Background

pub struct Background<F, G = F> where
    F: Future<Error = ResolveError>,
    G: Future<Error = ResolveError>, 
{ /* fields omitted */ }

A future that represents sending a request to a background task, waiting for it to send back a lookup future, and then running the lookup future.

Trait Implementations

impl<E, F, G> From<E> for Background<F, G> where
    E: Into<ResolveError>,
    F: Future<Error = ResolveError>,
    G: Future<Error = ResolveError>, 
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impl<F, G> From<AndThen<MapErr<Receiver<F>, fn(Canceled) -> ResolveError>, G, fn(F) -> G>> for Background<F, G> where
    F: Future<Error = ResolveError>,
    G: Future<Error = ResolveError>, 
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impl<F: Debug, G: Debug> Debug for Background<F, G> where
    F: Future<Error = ResolveError>,
    G: Future<Error = ResolveError>,
    G::Item: Debug
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impl<F, G> Future for Background<F, G> where
    F: Future<Error = ResolveError>,
    G: Future<Error = ResolveError>,
    Either<AndThen<MapErr<Receiver<F>, fn(_: Canceled) -> ResolveError>, G, fn(_: F) -> G>, FutureResult<G::Item, ResolveError>>: Future<Item = G::Item, Error = ResolveError>, 
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type Item = G::Item

The type of value that this future will resolved with if it is successful. Read more

type Error = ResolveError

The type of error that this future will resolve with if it fails in a normal fashion. Read more

fn wait(self) -> Result<Self::Item, Self::Error>
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Block the current thread until this future is resolved. Read more

fn map<F, U>(self, f: F) -> Map<Self, F> where
    F: FnOnce(Self::Item) -> U, 
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Map this future's result to a different type, returning a new future of the resulting type. Read more

fn map_err<F, E>(self, f: F) -> MapErr<Self, F> where
    F: FnOnce(Self::Error) -> E, 
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Map this future's error to a different error, returning a new future. Read more

fn from_err<E>(self) -> FromErr<Self, E> where
    E: From<Self::Error>, 
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Map this future's error to any error implementing From for this future's Error, returning a new future. Read more

fn then<F, B>(self, f: F) -> Then<Self, B, F> where
    B: IntoFuture,
    F: FnOnce(Result<Self::Item, Self::Error>) -> B, 
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Chain on a computation for when a future finished, passing the result of the future to the provided closure f. Read more

fn and_then<F, B>(self, f: F) -> AndThen<Self, B, F> where
    B: IntoFuture<Error = Self::Error>,
    F: FnOnce(Self::Item) -> B, 
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Execute another future after this one has resolved successfully. Read more

fn or_else<F, B>(self, f: F) -> OrElse<Self, B, F> where
    B: IntoFuture<Item = Self::Item>,
    F: FnOnce(Self::Error) -> B, 
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Execute another future if this one resolves with an error. Read more

fn select<B>(self, other: B) -> Select<Self, <B as IntoFuture>::Future> where
    B: IntoFuture<Item = Self::Item, Error = Self::Error>, 
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Waits for either one of two futures to complete. Read more

fn select2<B>(self, other: B) -> Select2<Self, <B as IntoFuture>::Future> where
    B: IntoFuture
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Waits for either one of two differently-typed futures to complete. Read more

fn join<B>(self, other: B) -> Join<Self, <B as IntoFuture>::Future> where
    B: IntoFuture<Error = Self::Error>, 
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Joins the result of two futures, waiting for them both to complete. Read more

fn join3<B, C>(
    self,
    b: B,
    c: C
) -> Join3<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future> where
    B: IntoFuture<Error = Self::Error>,
    C: IntoFuture<Error = Self::Error>, 
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Same as join, but with more futures.

fn join4<B, C, D>(
    self,
    b: B,
    c: C,
    d: D
) -> Join4<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future> where
    B: IntoFuture<Error = Self::Error>,
    C: IntoFuture<Error = Self::Error>,
    D: IntoFuture<Error = Self::Error>, 
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Same as join, but with more futures.

fn join5<B, C, D, E>(
    self,
    b: B,
    c: C,
    d: D,
    e: E
) -> Join5<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future, <E as IntoFuture>::Future> where
    B: IntoFuture<Error = Self::Error>,
    C: IntoFuture<Error = Self::Error>,
    D: IntoFuture<Error = Self::Error>,
    E: IntoFuture<Error = Self::Error>, 
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Same as join, but with more futures.

fn into_stream(self) -> IntoStream<Self>
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Convert this future into a single element stream. Read more

fn flatten(self) -> Flatten<Self> where
    Self::Item: IntoFuture,
    <Self::Item as IntoFuture>::Error: From<Self::Error>, 
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Flatten the execution of this future when the successful result of this future is itself another future. Read more

fn flatten_stream(self) -> FlattenStream<Self> where
    Self::Item: Stream,
    <Self::Item as Stream>::Error == Self::Error
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Flatten the execution of this future when the successful result of this future is a stream. Read more

fn fuse(self) -> Fuse<Self>
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Fuse a future such that poll will never again be called once it has completed. Read more

fn inspect<F>(self, f: F) -> Inspect<Self, F> where
    F: FnOnce(&Self::Item), 
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Do something with the item of a future, passing it on. Read more

fn catch_unwind(self) -> CatchUnwind<Self> where
    Self: UnwindSafe
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Catches unwinding panics while polling the future. Read more

fn shared(self) -> Shared<Self>
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Create a cloneable handle to this future where all handles will resolve to the same result. Read more

Auto Trait Implementations

impl<F, G> Send for Background<F, G> where
    F: Send,
    G: Send,
    <G as Future>::Item: Send

impl<F, G> Sync for Background<F, G> where
    F: Send,
    G: Sync,
    <G as Future>::Item: Sync

Blanket Implementations

impl<T> From for T
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impl<T, U> Into for T where
    U: From<T>, 
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impl<T, U> TryFrom for T where
    T: From<U>, 
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type Error = !

🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> Borrow for T where
    T: ?Sized
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impl<T> BorrowMut for T where
    T: ?Sized
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impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> Erased for T