Jsonata chain operator giving different results

General
1

Given some JSON:

{
  "A": 1,
  "B" : 2,
  "C": 3
}

I'd expect this Jasonata statement $spread($)[*=2] to gives these results (which it does indeed):

 {
   "B": 2
 }

But when I use what I believe to be semantically the same statement but use the chain operator: $~>$spread()[*=2] it gives the results:

[
  {
    "A": 1
  },
  {
    "B": 2
  },
  {
    "C": 3
  }
]

Could anyone explain why Jsonata processes those two statements which in my estimation should yield identical results, but are handled so differently? Is there something I don't understand about the chain operator?

Thanks in advance!

2

The chain parts need to be in parentheses
e.g

($~>$spread())[*=2]

[edit] removed typo

1 Like
3

Thank you! Great insight! Do you understand why? Is it an order of operations problem?

4

I believe the spread is applying the filter to each property of the object, rather than the finished array.

5

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