submitDouble

Submits a task that returns a double and returns a PromiseDouble representing the pending result.

Example:

    var pool = WorkerPool.withDefault ();
    var promise = pool.submitDouble (() => { return 3.14; });
    double result = promise.await ();
    pool.shutdown ();

Parameters:

task	the task to execute.

Returns:

a PromiseDouble for the pending result.