solve tally (or: solve count) #244

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1. schutta commented on Sep 30, 2018

   

   schutta

   on Sep 30, 2018

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   Instead of wc you could use awk for piping. For example:

   $ minizinc a.mzn -a | awk '/^----------/ {a++;print "% sol_no = " a ";"} {print}'
   

   The output looks as follows

   x = 1;
   y = 5;
   % sol_no = 1;
   ----------
   x = 1;
   y = 6;
   % sol_no = 2;
   ----------
   x = 2;
   y = 6;
   % sol_no = 3;
   ----------
   ==========
   

   for this model.

   var 1..6: x :: add_to_output;
   var 1..6: y :: add_to_output;
   constraint x + 3 < y;
   solve satisfy;
   

   Instead of declaring the "solve tally" inside the model, imo, it is better to add an option to minizinc and solns2out similar to --output-time, which adds the "solve tally" in the output as a comment.
2. Pierre-Flener commented on Oct 3, 2018

   

   Pierre-Flener

   on Oct 3, 2018

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   Thanks (it's been some time I played with awk)!

   I like the suggested idea of adding a new command-line option for tallying, so that's for my wish list!
3. Dekker1

   added

   enhancement

   on Oct 5, 2018
4. guidotack

   added a commit that references this issue on Jun 4, 2019

   Print number of solutions as mzn-stat after solving. Fixes #244.

   This issue will close once commit 34199aa is merged into the 'develop' branch.

   34199aa
5. guidotack commented on Jun 4, 2019

   

   guidotack

   on Jun 4, 2019

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   The next release will print a statistics line with the number of solutions after solving has finished (enabled using the -s command line switch).
6. guidotack

   closed this as completedon Jun 4, 2019
7. cyderize

   added the

   Feature

   issue type on Jan 22, 2026
8. cyderize

   removed

   enhancement

   on Jan 22, 2026