The way I would handle those cases, is by raising an exception. The same
way that you raise an exception when the software is not able to give any
other answer that you might ask.
El martes, 15 de noviembre de 2016, 8:22:15 (UTC+1), tdumont escribió:
>
> When developing a software which aims to prove something, it seems
> necessary to be able to return something in
> {True, False, Indeterminate}.
>
> Of course, there are many possibilities to do this, but is there a
> "canonical" one in Sage ?
>
> In C++, for example, there exists the Boost Tribool library
> (
> http://www.boost.org/doc/libs/1_62_0/doc/html/tribool.html#tribool.introduction)
>
>
> .
>
> t.d.
>
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