On Mon, Dec 12, 2016 at 11:12:22AM +0100, Henrik Sarvell wrote: > This looks like the one I need, I want all projects whose date range > has any kind of overlap with the given date range.
How do you think about the '+UB' tree solution I suggested in my follow-up mail? > (class +Proj +Macropisobj) > ... > (rel sDate (+UB +Aux +Ref +Date) (eDate)) > (rel eDate (+Date)) > > Then a 'collect' would find the range directly: > > (collect 'sDate '+Proj (list Sdate Sdate) (list Edate Edate)) I think that is much more elegant and efficient. - Alex -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
