David Rijsman wrote:
I am building my own somewhat generic tracing for certain search operators and for this I have created my own branching to create my own tracing in a Branching::commit. This in itself is no problem but now I would like to map the variable(s), on which tell operation(s) will be executed in the commit, back to variables in for example an array in my derived Space (for example the variable we execute a tell on is the third variable in the array in my space). As the IntVar instances have no identifier attributes this seems impossible. Am I missing some possibilities? And if I would like to add an identifier attribute to for example an IntVar I should do this in IntVarImp?
I'm not sure I understand every detail of what you're trying to do, let me try to summarize: you have an array of IntVars in your space, and tracing means that you output what's happening during a commit. And of course you want to say something like "variable no. 3 was modified", where 3 is the index in the global array? Our generic solution for this is a VarMap, which belongs to the new reflection API. You can find a small tutorial on reflection here:
http://www.gecode.org/gecode-doc-latest/PageReflection.html Cheers, Guido
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