Array slice with negative step and start greater than end

Setup

Selector: $[0:3:-2]

["first", "second", "third", "forth", "fifth"]

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)

[
  "first",
  "second",
  "third"
]

Clojure (json-path) ¹

"first"

Erlang (ejsonpath)

Not supported

syntax error before: '-'

Golang (github.com-PaesslerAG-jsonpath) ¹

[
  "third",
  "first"
]

JavaScript (jsonpathly)

[
  "first",
  "second",
  "third"
]

Java (com.github.jsurfer)

Not supported

org.antlr.v4.runtime.misc.ParseCancellationException

Java (com.jayway.jsonpath) ¹ ³

[
  "first",
  "second",
  "third"
]

Kotlin (com.nfeld.jsonpathkt) ¹

[
  "first",
  "second",
  "third"
]

Objective-C (SMJJSONPath) ¹ ³

[
  "first",
  "second",
  "third"
]

Perl (JSON-Path)

[
  "third",
  "second",
  "first"
]

Python (jsonpath-ng)

Not supported

JsonPathParserError('Parse error at 1:5 near token : (:)')

Python (jsonpath-rw)

Not supported

Exception('Parse error at 1:5 near token : (:)')

Raku (JSON-Path)

Not supported

JSON path parse error at position 1

Rust (jsonpath)

Not supported

parsing error

Rust (jsonpath_lib)

Not supported

path error: 
$[0:3:-2]
^^^^^^

Rust (jsonpath_plus)

[
  "third",
  "first"
]

Swift (Sextant)

[
  "first",
  "second",
  "third"
]

Errors

C (json-glib)

timeout: sending signal TERM to command ‘build/main’

Elixir (ExJsonPath)

FunctionClauseError

Golang (github.com-oliveagle-jsonpath) ¹

only support one range(from, to): [0 3 -2]

PHP (Goessner) ²

timeout: sending signal TERM to command ‘implementations/PHP_Goessner/run.sh’

PHP (softcreatr-jsonpath)

timeout: sending signal TERM to command ‘php’

Ruby (jsonpath)

step can't be negative

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.