Enum actix_web::Either [] [src]

pub enum Either<A, B> {
    A(A),
    B(B),
}

Combines two different responder types into a single type

use futures::future::result;
use actix_web::{Either, Error, HttpRequest, HttpResponse, AsyncResponder};

type RegisterResult = Either<HttpResponse, Box<Future<Item=HttpResponse, Error=Error>>>;


fn index(req: HttpRequest) -> RegisterResult {
    if is_a_variant() { // <- choose variant A
        Either::A(
            HttpResponse::BadRequest().body("Bad data"))
    } else {
        Either::B(      // <- variant B
            result(Ok(HttpResponse::Ok()
                   .content_type("text/html")
                   .body("Hello!")))
                   .responder())
    }
}

Variants

First branch of the type

Second branch of the type

Trait Implementations

impl<A: Debug, B: Debug> Debug for Either<A, B>
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Formats the value using the given formatter. Read more

impl<A, B> Responder for Either<A, B> where
    A: Responder,
    B: Responder
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The associated item which can be returned.

The associated error which can be returned.

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Convert itself to AsyncResult or Error.

impl<A, B, I, E> Future for Either<A, B> where
    A: Future<Item = I, Error = E>,
    B: Future<Item = I, Error = E>, 
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The type of value that this future will resolved with if it is successful. Read more

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

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Query this future to see if its value has become available, registering interest if it is not. Read more

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Block the current thread until this future is resolved. Read more

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Map this future's result to a different type, returning a new future of the resulting type. Read more

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Map this future's error to a different error, returning a new future. Read more

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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

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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

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Execute another future after this one has resolved successfully. Read more

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Execute another future if this one resolves with an error. Read more

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Waits for either one of two futures to complete. Read more

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Waits for either one of two differently-typed futures to complete. Read more

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Joins the result of two futures, waiting for them both to complete. Read more

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Same as join, but with more futures.

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Same as join, but with more futures.

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Same as join, but with more futures.

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Convert this future into a single element stream. Read more

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Flatten the execution of this future when the successful result of this future is itself another future. Read more

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Flatten the execution of this future when the successful result of this future is a stream. Read more

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Fuse a future such that poll will never again be called once it has completed. Read more

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Do something with the item of a future, passing it on. Read more

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Catches unwinding panics while polling the future. Read more

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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<A, B> Send for Either<A, B> where
    A: Send,
    B: Send

impl<A, B> Sync for Either<A, B> where
    A: Sync,
    B: Sync