Cast/convert dictionary to array of variants

RE: Cast/convert dictionary to array of variants

Silas. B. Ferreira — Mon, 22 Jul 2024 21:04:03 GMT

Wow! That is it, it definitely works like a charm. Many thanks!

RE: Cast/convert dictionary to array of variants

Mike Schmitt — Mon, 22 Jul 2024 21:01:28 GMT

Oh, I just remembered there's a cleaner way to do this using a!update() (which can inject a new property into an existing dictionary or map), so no need to manually construct a JSON string to back-convert. See below:

a!localVariables(
  local!originalDictionary: {
    'a': true,
    'b': true,
    'c': false,
    'd': false
  },
  
  local!keys: a!keys(local!originalDictionary),
  
  a!forEach(
    local!keys,
    
    a!update(
      data: a!map(),
      index: fv!item,
      value: property(local!originalDictionary, fv!item)
    )
  )
)

RE: Cast/convert dictionary to array of variants

Mike Schmitt — Mon, 22 Jul 2024 20:54:34 GMT

I guess it takes a little trickery to get the plaintext key name to be the key in a new dictionary, but if we (for instance) use JSON as an intermediary step, that'll pretty much do it for us...

a!localVariables(
  local!originalDictionary: {
    'a': true,
    'b': true,
    'c': false,
    'd': false
  },
  
  local!keys: a!keys(local!originalDictionary),
  
  a!forEach(
    local!keys,
    
    /* note: double quotes have to be handled carefully here */
    a!fromJson(
      "{""" & fv!item & """:" & property(local!originalDictionary, fv!item) & "}"
    )
  )
)

RE: Cast/convert dictionary to array of variants

Silas. B. Ferreira — Mon, 22 Jul 2024 20:46:10 GMT

Could you please give me an example how can I create a set of new dictionaries? I am trying with a!forEach

RE: Cast/convert dictionary to array of variants

Mike Schmitt — Mon, 22 Jul 2024 20:26:16 GMT

What's your use case?

Depending on the particulars, I expect you could probably utilize a!keys() to get the keys from the original dictionary, then iterate over that list, creating a set of new dictionaries each containing just one property from the original.