Hi, First of all let me say that GLPK and GNU Math Prog are great. I have been using it via Java and R.
However, I do have some enhancement suggestions: - ordered sets: for example: set time ordered; - access of elements: - last(set_name) - first(set_name) For example: set time ordered; set time:= 1 2 3; last(time) would return 3 and first(time) would return 1. This would make writing constraints much easier. All the best, Katharina
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