On 4 October 2017 at 19:38, oldk1331 <[email protected]> wrote:
> Waldek, Bill, yes, for correctness we need to distinguish
> the inner domain and outer domain, and it's easy to
> have a GENSYM() for each Maybe domain.
>
> But that will hurt performance.
>

Why will this hurt performance?

> I think current situation is a good compromise. We can
> say in documentation that all instances of Maybe share
> a common value of failed(), and nested usage of Maybe
> is not recommended, Maybe should not be used as Rep
> itself but can be part of Rep.  Do you agree?
>

I value correctness much more than performance except in the most
extreme and special cases.

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