Problem with list of lists

Hi vickyr0501 ,

i tried solving the above problem with a foreach(). here is my code.

a!localVariables(
  local!input: { { 1, 3 }, { 2, 3 }, { 4, 5 }, { 5, 6 } },
  local!even: a!forEach(
    items: local!input,
    expression: if(mod(fv!index, 2) = 0, fv!item, {})
  ),
  local!odd: a!forEach(
    items: local!input,
    expression: if(mod(fv!index, 2) = 0, {}, fv!item)
  ),
  a!forEach(
    items: local!odd,
    expression: fv!item * (index(local!even, fv!index, 0))
  )
)

Hi vickyr0501 ,

i tried solving the above problem with a foreach(). here is my code.

a!localVariables(
  local!input: { { 1, 3 }, { 2, 3 }, { 4, 5 }, { 5, 6 } },
  local!even: a!forEach(
    items: local!input,
    expression: if(mod(fv!index, 2) = 0, fv!item, {})
  ),
  local!odd: a!forEach(
    items: local!input,
    expression: if(mod(fv!index, 2) = 0, {}, fv!item)
  ),
  a!forEach(
    items: local!odd,
    expression: fv!item * (index(local!even, fv!index, 0))
  )
)

Really, everything we need to know about how appian (fails to) handle list-of-lists can be seen with how it resolves the value stored in local!input:

The only exception I've ever really seen to the above is how the result of merge() is treated - because for whatever reason, list-of-list data seems to be honored (to a certain extent) in this context (and perhaps this context alone).  It's very frustrating since merge() is pretty unintuitive to understand and to use for real-world cases.