Alejandro R Mosteo

See https://forum.ada-lang.io/t/getting-emacs-ada-mode-working/708/20 We know that externals for the crate exist and that the platform is unsupported, so we could be a little more informative here.

There are now native runners in GitHub CI, see #1492.

There is one in Rx.Op.Take, might be more

Like Blocking_Last, but only for Single observables.

Add this interface to selected operators, so it can be leveraged by Blocking_Get (to ensure that no unexpected data is forthcoming).

Wait for and retrieve last element in a subscription. Implementation must be cleverer than polling (e.g. a rendezvous).

Does not hog a thread (unlike Op.Hold) Better yet, pass scheduler to Hold and if that's the Immediate one, act as now, otherwise, schedule for the future