Going through Dennis Shasha’s primer, in chapter 6 where thedifference function is defined, we can read:difference[c;d] /returns 0#because there is no such elementBut according to my downloaded free version it is now:difference[c;d] /returnssymbol() because there is no suchelementJust so you know…/Paul
Hi,I suppose you mean symbol$()and 0# it is correct(0#)~(symbol$())both are empty lists of symbols, just different style of definition:0# /list with zero elements of symbol typesymbol$() /empty general list casted to empty symbol listCheers,nmlOn Apr 14, 10:20?pm, Paul <paulgauthier1…> wrote:> Going through Dennis Shasha’s primer, in chapter 6 where the> difference function is defined, we can read:>> difference[c;d] /returns ?0# because there is no such element>> But according to my downloaded free version it is now:>> difference[c;d] /returns ?symbol() because there is no such> element>> Just so you know…/Paul</paulgauthier1…>