creates an already completed Promise with the specified exception
Creates an already completed CompletionStage with the specified exception
Returns a Future that will hold the optional result of the first Future with a result that matches the predicate
Returns a Future to the result of the first future in the list that is completed
A non-blocking fold over the specified futures, with the start value of the given zero.
A non-blocking fold over the specified futures, with the start value of the given zero. The fold is performed on the thread where the last future is completed, the result will be the first failure of any of the futures, or any failure in the actual fold, or the result of the fold.
Starts an asynchronous computation and returns a Future
object with the result of that computation.
Starts an asynchronous computation and returns a Future
object with the result of that computation.
The result becomes available once the asynchronous computation is completed.
the asynchronous computation
the execution context on which the future is run
the Future
holding the result of the computation
Creates a promise object which can be completed with a value.
Creates a promise object which can be completed with a value.
the newly created Promise
object
Reduces the results of the supplied futures and binary function.
Simple version of #traverse.
Simple version of #traverse. Transforms a JIterable[Future[A]] into a Future[JIterable[A]]. Useful for reducing many Futures into a single Future.
Creates an already completed Promise with the specified result
Transforms a JIterable[A] into a Future[JIterable[B]] using the provided Function A => Future[B].
Transforms a JIterable[A] into a Future[JIterable[B]] using the provided Function A => Future[B]. This is useful for performing a parallel map. For example, to apply a function to all items of a list in parallel.
Futures is the Java API for Futures and Promises