Re: Ada-Oriented GUI

["Alejandro R. Mosteo" <alejandro@mosteo.com>]

On 21/03/18 21:11, Dmitry A. Kazakov wrote:
> On 2018-03-21 20:51, Dan'l Miller wrote:
>> On Wednesday, March 21, 2018 at 2:11:13 PM UTC-5, Simon Wright wrote:
>>> I suspect that Dmitry only meant that output-pending must occur before
>>> output-complete, whichever thread you view it from.
>>
>> I assume that output here is event emission from the head-end of the 
>> river from the upstream perspective of producing output to downstream 
>> receivers that handle that output-from-upstream as input. 
> 
> This is not how asynchronous I/O works in many cases. The I/O request is 
> queued in one thread, initiated in another, processed in third, 
> completed in fourth.

I'm not sure I'm understanding the gist of this point of the 
conversation, but exactly that kind of thread-hopping is trivial to 
write in Rx.

> Your approach seem to impose some heavy constraint not just on GUI as 
> many existing frameworks do, which people really hate, but on all 
> system. Good luck with that, but don't expect everybody to embrace that
Rx certainly imposes a way of thinking, most like using a functional 
language does. It's not an all-or-nothing thing though, there is a 
well-defined entry and exit point. Also, there's something pleasurable 
about it, is like connecting dots to make a picture, or matching puzzle 
pieces.