Bracket notation with number on string

Setup

Selector: $[0]

"Hello World"

Results

Consensus

[]

Scalar consensus

The scalar consensus applies for implementations which return a single value where only one match is possible (instead of an array of a single value).

null

Not found consensus

This consensus applies for implementations which return a specific not found value if no match exists.

NOT_FOUND

Scalar not found consensus

This consensus applies for implementations which returns a specific not found value when a query that would regularly return a single match results in no match.

NOT_FOUND

Other responses

JavaScript (Goessner) ² 

[
  "H"
]

JavaScript (jsonpath-plus) 

[
  "H"
]

Kotlin (com.nfeld.jsonpathkt) ¹ 

"H"

Python (jsonpath-ng) 

[
  "H"
]

Python (jsonpath-rw) 

[
  "H"
]

Errors

Clojure (json-path) ¹ 

java.lang.Exception object must be an array.

Elixir (jaxon) 

** (Jaxon.ParseError) Unexpected string "Hello World", expected a string, number, object, array instead.
    lib/jaxon/decoders/query.ex:29: anonymous fn/2 in Jaxon.Decoders.Query.query/2
    lib/jsonpath.ex:8: Mix.Tasks.Execute.run/1

Elixir (warpath) ¹ 

Warpath.JsonDecodeError

Erlang (ejsonpath) 

init terminating in do_boot (not_implemented)

Crash dump is being written to: /dev/null...done
{"init terminating in do_boot",not_implemented}

Golang (github.com-PaesslerAG-jsonpath) ¹ 

unsupported value type string for select, expected map[string]interface{} or []interface{}

Golang (github.com-oliveagle-jsonpath) ¹ 

object is not Slice

JavaScript (jsonpath) 

obj needs to be an object

Perl (JSON-Path) 

Unable to decode Hello World as JSON: malformed JSON string, neither array, object, number, string or atom, at character offset 0 (before "Hello World") at build/lib/perl5/JSON/Path/Evaluator.pm line 77.
 at build/lib/perl5/JSON/Path/Evaluator.pm line 75.

Python (python-jsonpath) 

Invalid JSON document - Expecting value: line 1 column 1 (char 0)

Raku (JSON-Path) 

at 0: expected a json object, but got '"Hello Wo"'

Ruby (jsonpath) 

unexpected token at 'Hello World'

Footnotes