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jsonpath

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RFC 9535 JSONPath in Go

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RFC 9535 JSONPath in Go
=======================

[![⚖️ MIT]][mit] [![📚 Docs]][docs] [![🗃️ Report Card]][card] [![🛠️ Build Status]][ci] [![📊 Coverage]][cov]

The jsonpath package provides [RFC 9535 JSONPath] functionality in Go.
It operates on any type of slice or string-keyed map.

## Learn More

*   📦 See the [package documentation][docs] for usage and examples.
*   📚 See the [RFC 9535 JSONPath] standard for details on the JSONPath query
    syntax and examples of its usage.
*   🛝 Try it out in the [Playground].

## JSONPath Expressions

A brief overview of [RFC 9535 JSONPath] syntax:

| Syntax Element     | Description                                                             |
| ------------------ | ----------------------------------------------------------------------- |
| `$`                | root node identifier                                                    |
| `@`                | current node identifier (valid only within filter selectors)            |
| `[<selectors>]`    | child segment: selects zero or more children of a node                  |
| `.name`            | shorthand for `['name']`                                                |
| `.*`               | shorthand for `[*]`                                                     |
| `..[<selectors>]`  | descendant segment: selects zero or more descendants of a node          |
| `..name`           | shorthand for `..['name']`                                              |
| `..*`              | shorthand for `..[*]`                                                   |
| `'name'`           | name selector: selects a named child of an object                       |
| `*`                | wildcard selector: selects all children of a node                       |
| `3`                | index selector: selects an indexed child of an array (from 0)           |
| `0:100:5`          | array slice selector: `start:end:step` for arrays                       |
| `?<logical-expr>`  | filter selector: selects particular children using a logical expression |
| `length(@.foo)`    | function extension: invokes  a function in a filter expression          |

## Dependencies

This package has only test dependencies.

## Copyright

[⚖️ MIT]: https://img.shields.io/badge/License-MIT-blue.svg "⚖️ MIT License"
  [mit]: https://opensource.org/license/MIT "⚖️ MIT License"
  [📚 Docs]: https://godoc.org/github.com/theory/jsonpath?status.svg "📚 Documentation"
  [docs]: https://pkg.go.dev/github.com/theory/jsonpath "📄 Documentation"
  [🗃️ Report Card]: https://goreportcard.com/badge/github.com/theory/jsonpath
    "🗃️ Report Card"
  [card]: https://goreportcard.com/report/github.com/theory/jsonpath
    "🗃️ Report Card"
  [🛠️ Build Status]: https://github.com/theory/jsonpath/actions/workflows/ci.yml/badge.svg
    "🛠️ Build Status"
  [ci]: https://github.com/theory/jsonpath/actions/workflows/ci.yml
    "🛠️ Build Status"
  [📊 Coverage]: https://codecov.io/gh/theory/jsonpath/graph/badge.svg?token=UB1UJ95NIK
    "📊 Code Coverage"
  [cov]: https://codecov.io/gh/theory/jsonpath "📊 Code Coverage"
  [RFC 9535 JSONPath]: https://www.rfc-editor.org/rfc/rfc9535.html
    "RFC 9535 JSONPath: Query Expressions for JSON"
  [Playground]: https://theory.github.io/jsonpath/ "Go JSONPath Playground"

jsonpath

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