From: *Henry Rich* <henryhr...@gmail.com> Date: 3 May 2016 at 14:00 To: jeng...@jsoftware.com
A longstanding error is ' ' + (0$0) |domain error | ' ' +(0$0) It should work to produce an empty list, by analogy with 5 + '' and ' ' +"0 (0$0) NB. Also fails because of Integrated Rank Support |domain error | ' ' +"0(0$0) ' ' +"0"0 (0$0) NB. But at its heart, it works ' ' (3 : 'x+y'"0) (0$0) NB. Works this way too I would like to fix this, once I can follow the code well enough to find it. But it occurs to me that I ought to ask the old hands whether there's anything wrong with doing that. Is there? Henry ---------- From: *Roger Hui* <rogerhui.can...@gmail.com> Date: 3 May 2016 at 14:35 To: Henry Rich <henryhr...@gmail.com> Cc: jeng...@jsoftware.com The expression NOT signalling error is what Dyalog APL does, so you'll have that much going for you. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
