Online Course - Advanced Expressions: Part 2

RE: Online Course - Advanced Expressions: Part 2

masanobukana — Mon, 06 Mar 2023 00:31:17 GMT

thanks, all。

I will open a support case as per your recommendation.

And when I use reduce() I use it differently.

RE: Online Course - Advanced Expressions: Part 2

Peter Lewis — Fri, 03 Mar 2023 13:47:32 GMT

Hmm, I'm not sure what's going on, it's possible something isn't getting handled correctly with nested lists - you might want to open a support case. In the meantime, I think you can get the correct results if you flatten the list before passing it to reduce(). I also follow up internally on the course exercise!

RE: Online Course - Advanced Expressions: Part 2

Stefan Helzle — Fri, 03 Mar 2023 08:13:26 GMT

I see the same behaviour on my Appian 23.1. I changed the code a bit to highlight the problem.

a!localVariables(

  local!sensor: {
    a!map(data: {125,92,22,63,73,28,19}),
    a!map(data: {35, 65,92,22,63,73,28}),
    a!map(data: {2,  35,65,22,63,73,18,29}),
    a!map(data: {9,  35,65,63,35,28,19})
  },
  
  local!sum1: sum(1, local!sensor[1].data),
  local!sum2: sum(local!sum1, local!sensor[2].data),
  local!sum3: sum(local!sum2, local!sensor[3].data),
  local!sum4: sum(local!sum3, local!sensor[4].data),
  a!map(
    reduceResult: reduce(fn!sum, 1, local!sensor.data),
    manualResult: local!sum4,
    sumOnly: sum(1, local!sensor.data)
  )
)

Peter Lewis, do you have any ideas?