This was a lack of sleep on my part, not a j engine bug. Sorry about the noise.
-- Raul On Mon, Dec 19, 2022 at 1:04 AM Raul Miller <[email protected]> wrote: > > I'm trying advent of code, day 19 and I'm running into a strange error > which occurs in both j903 and j904. > > I'll probably try simplifying this into something which isolates the > problem more compactly, tomorrow. > > sample=: {{)n > Blueprint 1: > Each ore robot costs 4 ore. > Each clay robot costs 2 ore. > Each obsidian robot costs 3 ore and 14 clay. > Each geode robot costs 2 ore and 7 obsidian. > > Blueprint 2: > Each ore robot costs 2 ore. > Each clay robot costs 3 ore. > Each obsidian robot costs 3 ore and 8 clay. > Each geode robot costs 3 ore and 12 obsidian. > }} > > > costmat=: 0 1|:".>cutLF;._2{{)n > 0 0 0 0 0 1 0 > 0 0 0 0 0 0 0 > 0 0 0 0 0 0 0 > 0 0 0 0 0 0 1 > > 0 0 0 1 0 0 0 > 0 0 0 0 0 0 0 > 0 0 0 0 0 0 0 > 0 0 0 0 1 0 0 > > 0 0 1 0 0 0 0 > 0 0 0 0 0 0 0 > 0 0 0 0 0 0 0 > 0 0 0 0 0 0 0 > > 0 1 0 0 0 0 0 > 0 0 0 0 0 0 0 > 0 0 0 0 0 0 0 > 0 0 0 0 0 0 0 > > }}rplc LF2;LF,';' > > num=: 0 ". ([-.-.)&(~.'-',":i.10) > parse=: costmat +/ .*~ num;._1 > > bot0=:24 4$4{.1 > addbot=: {{ > echo 'm';m > echo 'y';y > echo 'typ';typ=: 1 i.~ +./t=.y */ .>:"1/m > echo 'min';min=: 1 i.~ typ=.{|:t > x+([echo@<)(min<:i.24)*/typ=i._4 > }} > > When I run > > bot0 ({.parse sample) addbot +/\bot0 > > I'm expecting some 1s in the second column of the result. Those do not > appear and the final echo is reporting a result of all zeros. And yet, > when I run the expression > (min<:i.24)*/typ=i._4 > > immediately after that prior expression, I get 1s in the second column. > > Anyways... the code here is ugly, but so is this behavior. I think. > > Hopefully, this isn't also because I goofed in some tremendously > obvious fashion. > > For now, I should probably just get some sleep... > > -- > Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
