Addition of list mapping

[KernelDeimos]

This commit allows map queries on lists. Performing a map query on a list results in a new list, where each element is the element at the queried key of each object in the list that was queried. (mind the word-salad; I couldn't think of a better way to accurately explain it)

Example

JSON

{
  "test": [
    {
      "name": "elgs"
    },
    {
      "name": "enny"
    },
    {
      "name": "sam"
    }
  ]
}

Code

input.Query(test.name) // ["elgs", "enny", "sam"]

[elgs]

Thanks for the code. Just a quick question, would it conflict with the following JSON data semantically?

{
  "test": {
    "name": ["elgs", "enny", "sam"]
  }
}

[KernelDeimos]

I just edited the example to remove my commas (which would've caused a syntax error)

I just tested my example and the one you just provided - each outputs the expected results. Semantically, I suppose it does, but I don't think that's a problem; in order to write a query you already have to make an assumption about the structure of the data.

Let me know if this answers your question

[KernelDeimos]

An alternative might be to require the query to be test.[*].name, which is what I was originally going to do, but I decided test.name was more elegant; If the former syntax was required, it would imply you have two "types" of lists, a list-that-you-are-not-allowed-to-map list and a list-that-you-can-map list