#[must_use]
pub struct CassFuture<T> { /* fields omitted */ }
A future representing the result of a Cassandra driver operation.
On success, returns a result of type T
. On failure, returns a Cassandra error.
When constructing this take care to supply the correct type argument, since it will
be used to control how the result is extracted from the underlying Cassandra
driver future (see Completable
).
Drop this CassFuture.
This also drops its reference to the FutureTarget, but if
we're waiting to be called back the FutureState::Awaiting holds another reference to
the target, which keeps it alive until the callback fires.
Formats the value using the given formatter. Read more
A Cassandra future is a normal Rust future.
type Item = T
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
Query this future to see if its value has become available, registering interest if it is not. Read more
Block the current thread until this future is resolved. Read more
Map this future's result to a different type, returning a new future of the resulting type. Read more
Map this future's error to a different error, returning a new future. Read more
Map this future's error to any error implementing From
for this future's Error
, returning a new future. Read more
Chain on a computation for when a future finished, passing the result of the future to the provided closure f
. Read more
Execute another future after this one has resolved successfully. Read more
Execute another future if this one resolves with an error. Read more
Waits for either one of two futures to complete. Read more
Waits for either one of two differently-typed futures to complete. Read more
Joins the result of two futures, waiting for them both to complete. Read more
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>, | [src] |
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>, | [src] |
Same as join
, but with more futures.
Convert this future into a single element stream. Read more
Flatten the execution of this future when the successful result of this future is itself another future. Read more
Flatten the execution of this future when the successful result of this future is a stream. Read more
Fuse a future such that poll
will never again be called once it has completed. Read more
Do something with the item of a future, passing it on. Read more
Catches unwinding panics while polling the future. Read more
Create a cloneable handle to this future where all handles will resolve to the same result. Read more
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static
The future that this type can be converted into.
The item that the future may resolve with.
The error that the future may resolve with.
Consumes this object and produces a future.