Re: Mixing operators and dot notation

[briot.emmanuel@gmail.com]

> To give you the essence. I'm back to trying to get a minimal ReactiveX 
> (http://reactivex.io)-like thing working. The gist is that you can chain 
> many transformation operations:
> 
> SourceType.Generate_Data
>     .Op1 (...)
>     ...
>     .OpN (...)
>     .Endpoint (Operate_With_Resulting_Transformed_Data);


Funny, I have been playing with exactly the same purpose recently
although I only started from the promises pattern, which I am now
extending.

https://github.com/briot/Ada-promises


I had exactly the same problems you had, and copy with using operators,
so my current syntax is:

      Get_Promise
           and new Op1
           and (new Op2 & new Op3)
           and new Endpoint;

(using tagged types for the operations). That's because things need to be
type safe as well, so the operations are declared in generic packages,
and therefore we can't use the dot notation here. I believe there could be
some extension to the language here.

Emmanuel