awaitSingle
Awaits for completion of the MaybeSource without blocking the thread. Returns the resulting value, or throws if either no value is produced or this MaybeSource produces an error.
This suspending function is cancellable. If the Job of the current coroutine is cancelled while this suspending function is waiting, this function immediately resumes with CancellationException and disposes of its subscription.
Throws
if no elements were produced by this MaybeSource.
Awaits the single value from the given observable without blocking the thread and returns the resulting value, or, if this observable has produced an error, throws the corresponding exception.
This suspending function is cancellable. If the Job of the current coroutine is cancelled while the suspending function is waiting, this function immediately disposes of its subscription and resumes with CancellationException.
Throws
if the observable does not emit any value
if the observable emits more than one value