SWI-Prolog source code: Converting hours-and-minutes to integers (e.g. for use in CLP)

This short posting is about a useful piece of SWI-Prolog code I keep (re-)using, ever since I wrote it. It is a predicate that converts time (in an EXCEL-compatible format ‘HH:MM’ or ‘HH:MM:SS’) to integers expressing minutes only, e.g. integers suitable for use in CLP applications (Constraints Logic Programming over finite integer domains). I am [...]

Bridging gaps between Prologs (SWI-Prolog predicates implented in LPA Win-Prolog)

Today I spent too much time trying to force a SWI-Prolog project (of timetable scheduling, custom-made for a specific company) to run in a different compiler: LPA Win-Prolog. I needed badly to use certain graphics routines and other goodies of LPA Prolog (a commercial compiler), entire volumes of them in fact. So, I ended up [...]