Array slice with open start and end on object

Setup

Selector: $[:]

{":": 42, "more": "string"}

Results

Consensus

[]

Not found consensus

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

NOT_FOUND

Other responses

Bash (JSONPath.sh)

[
  42,
  "string"
]

Elixir (jaxon)

[
  42
]

JavaScript (Goessner) ²

[
  42
]

Java (com.jayway.jsonpath) ¹ ³

Not supported

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
com.jayway.jsonpath.InvalidPathException: Failed to parse SliceOperation: :

Objective-C (SMJJSONPath) ¹ ³

Not supported

Failed to parse SliceOperation: :

PHP (Goessner) ²

[
  42
]

Python (jsonpath) ²

[
  42
]

Python (jsonpath-ng)

[
  {
    ":": 42,
    "more": "string"
  }
]

Python (jsonpath-rw)

[
  {
    ":": 42,
    "more": "string"
  }
]

Raku (JSON-Path)

Not supported

JSON path parse error at position 1

Ruby (jsonpath)

[
  null,
  null
]

Rust (jsonpath)

Not supported

parsing error

dotNET (JsonPathLib)

[
  42
]

dotNET (Manatee.Json)

[
  42,
  "string"
]

Errors

Clojure (json-path) ¹

java.lang.Exception object must be an array.

Elixir (ExJsonPath)

Invalid object returned

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-oliveagle-jsonpath) ¹

object is not Slice

PHP (softcreatr-jsonpath)

TypeError

Perl (JSON-Path)

Assertion (":" is not an operator) failed!
 at build/lib/perl5/Carp/Assert.pm line 282, <STDIN> line 1.
	Carp::Assert::assert(...) called at build/lib/perl5/JSON/Path/Evaluator.pm line 215
	JSON::Path::Evaluator::_evaluate(...) called at build/lib/perl5/JSON/Path/Evaluator.pm line 120
	JSON::Path::Evaluator::evaluate(...) called at build/lib/perl5/JSON/Path/Evaluator.pm line 93
	JSON::Path::Evaluator::evaluate_jsonpath(...) called at build/lib/perl5/JSON/Path.pm line 103
	JSON::Path::values(...) called at main.pl line 11

Footnotes

• ¹ This implementation returns a single value where only one match is possible (instead of an array of a single value).
• ² This implementation returns a specific not found value if no match exists.
• ³ This implementation returns a specific not found value if a query that would regularly return a single match results in no match.