Re: [Wasa-users] Multiple Explorers

[Laurent C. <cai...@de...>]

> Just out of curiousity, what exactly does the "rank" 
> say. "instanciation rank of the Var" didn't make me 
> much smarter I'm afraid :-)

No, it is not smart at all. But in some cases it's very
handy. Please note that :
- it is intended to be used only when you've got 1
  sole array of Vars in your system,
- you're not bound to used getRank(). You can create 
  your own Vars, which provide a reference to the 
  buisness object member you wish to access to.


> I also have a question regarding cost functionality. 
> I need to implement something like "make min timespan".
> ...
> Any ideas? In general, how should one work with overal 
> costs?

You should create a Constraint "MinTimespan" which whould
increase error of all Vars implied in timespan calculation.
This is, at a certain point, the same thing as explaining
a solver what you want, and how vars are interrelated.