Let's merge this init into https://github.com/diegoholiveira/jsonlogic/blob/main/operation.go#L98

Like:

/* CUSTOM OPERATORS */
operators["contains_all"] = containsAll
operators["contains_any"] = containsAny
operators["contains_none"] = containsNone

Thanks for the review! I've made the requested changes:

1. README.md: Added documentation for custom operators before the LICENSE section, including a warning that these operators are not part of the
   official spec and may be deprecated in the future.

2. Code structure: Removed init() from arrays.go and moved the operator registration to operation.go with a /* CUSTOM OPERATORS */ comment.

All tests pass. Let me know if you'd like any further changes!

We might elect to fold this into a Community Extension for set / array querying, and perhaps roll it into the recommended baseline for JSON Logic implementations.

I think right now, for the bottom two, you'd have to combine some every and in like,

{
  "some": [
    { "val": "tags" },
    { "in": [{ "val": [] }, ["urgent", "important"]] }
  ]
}

But it's definitely more cumbersome. 😄

I think contains_all would be difficult to recreate in most implementations, as it requires scope traversal to use with every and in, and we haven't quite agreed on that syntax yet in proposals.

all(['admin', 'editor'], in(@, @.^.^.roles))

a.k.a

{
 "all": [
  ["admin", "editor"],
  {
   "in": [
    {"val": []},
    {
     "val": [ [2], "roles" ]
    }
   ]
  }
 ]
}

That works in:

• https://json-logic.github.io/json-logic-engine/
• https://goplasmatic.github.io/datalogic-rs/playground.html

But nowhere else quite right now. And that's def so much more verbose than what's proposed here.