How to print 2d array

RE: How to print 2d array

ankitas0001 — Fri, 20 Nov 2020 18:00:45 GMT

Thanks Chirs for enhancing my knowledge.

RE: How to print 2d array

ankitas0001 — Fri, 20 Nov 2020 17:55:47 GMT

Thanks Scott this helped me.

RE: How to print 2d array

Chris — Thu, 19 Nov 2020 20:55:32 GMT

We can nix the nested a!foreach() in the second example above as well:

a!localVariables(
  local!a: {{1,2},{3,4},{6,7}},
  a!forEach(
    items: 1+enumerate(count(local!a)/2),
    expression: joinarray(index(local!a,{fv!item*2-1,fv!item*2},null),",")
  )
)

RE: How to print 2d array

Chris — Thu, 19 Nov 2020 20:51:51 GMT

The issue here is that the array is being flattened and a!foreach() sees it as 6 items, vs 3 pairs of 2 items each. I'm not sure if we can unflatten it directly within a primitive data type.

Are you able to control the array, such as formatting it to key/value pairs? Such as:

a!localVariables(
  local!a: {
    {value: {1,2}},
    {value: {3,4}},
    {value: {6,7}}
  },
  a!forEach(
    items: local!a,
    expression: joinarray(fv!item.value,",")
  )
)

Or, do we know that this data will always be an array of 2-valued nested arrays? Such as:

a!localVariables(
  local!a: {{1,2},{3,4},{6,7}},
  a!forEach(
    items: 1+enumerate(count(local!a)/2),
    expression: joinarray(
      a!foreach(
        items: {fv!item*2-1,fv!item*2},
        expression: index(local!a,fv!item,null)
      ),
      ","
    )
  )
)

RE: How to print 2d array

Scott Milton — Thu, 19 Nov 2020 20:25:06 GMT

In your example above the expression your a!foreach will run on each iteration, is just the value e.g., {1,2}, so that pair/array will be displayed however is appropriate for that type of value. If you have some specific expression rule or function that displays that type of value how you want, then you should use that instead of just the value. For example, instead of just expression:fv!item, use expression:joinArray(fv!item, ","). docs.appian.com/.../fnc_array_joinarray.html