### Install JQL with Cargo Binstall

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Install the JQL tool using Cargo Binstall, which can provide faster installations by downloading pre-compiled binaries.

```sh
cargo binstall jql
```

--------------------------------

### Install JQL with Cargo

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Install the JQL tool using Cargo, Rust's package manager. This is a common method for Rust-based command-line tools.

```sh
cargo install jql
```

--------------------------------

### Pipe in operator example

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Applies the next tokens in parallel on each element of an array. Use this to process array elements concurrently.

```json
{ "a": [{ "b": { "c": 1 } }, { "b": { "c": 2 } }] }
```

```sh
"a"|>'b''c'
```

```json
[1, 2]
```

--------------------------------

### Truncate operator example

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Maps the output into simple JSON primitives. Use this to simplify complex JSON structures to basic types.

```json
{ "a": [1, 2, 3] }
```

```sh
"a"!
```

```json
[]
```

--------------------------------

### Valid JSON Keys Example

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Demonstrates valid JSON keys, including an empty string and a key containing escaped double quotes. This highlights JQL's adherence to RFC 8259.

```json
{
  ".valid": 1337,
  "": "yeah!",
  "\"": "yup, valid too!"
}
```

--------------------------------

### Pipe out operator example

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Stops the parallelization initiated by the pipe in operator. Use this to consolidate results after parallel processing.

```json
{ "a": [{ "b": { "c": 1 } }, { "b": { "c": 2 } }] }
```

```sh
"a"|>'b''c'<|[1]
```

```json
2
```

--------------------------------

### Get Keys of an Object or Indices of an Array

Source: https://github.com/yamafaktory/jql/blob/main/README.md

The keys operator returns an array of keys for an object or indices for an array. Other primitive types are returned as is.

```sh
'@'
```

--------------------------------

### Lens Selector with Value Assignment

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Applies a lens selector to filter and transform JSON data. This example filters objects based on a nested key's value and selects another key.

```sh
'|={\"b\"d\"=2, \"c\"}'
```

--------------------------------

### List available JQL development commands

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Displays all available commands defined in the justfile for development tasks.

```sh
just --list
```

--------------------------------

### Display JQL help information

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Shows the help message for the JQL command, including usage and available options.

```sh
jql -h
```

```sh
jql --help
```

--------------------------------

### Accessing First Element of an Array with JQL

Source: https://github.com/yamafaktory/jql/blob/main/PERFORMANCE.md

Compares the performance of JQL's array indexing '[0]' against JQ's '.[] | {.[0]}' for accessing the first element of an array. Both commands process the same input.

```bash
echo '[1, 2, 3]' | jq '.[0]'
```

```bash
echo '[1, 2, 3]' | jql '[0]'
```

--------------------------------

### Extracting Multiple Fields from JSON Array with JQL

Source: https://github.com/yamafaktory/jql/blob/main/PERFORMANCE.md

Compares the performance of JQL's shorthand field extraction '|>{"field1", "field2"}' against JQ's complex mapping for extracting specific fields (name, url, language, stargazers_count, watchers_count) from a list of GitHub repositories. The JQ command uses a more verbose mapping, while JQL uses a concise syntax.

```bash
cat /home/runner/work/jql/jql/assets/github-repositories.json | jq -r '[.[] | {name: .name, url: .url, language: .language, stargazers_count: .stargazers_count, watchers_count: .watchers_count}]' > /dev/null
```

```bash
cat /home/runner/work/jql/jql/assets/github-repositories.json | jql '|>{"name", "url", "language", "stargazers_count", "watchers_count"}' > /dev/null
```

--------------------------------

### Build Array from Sub-queries

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Constructs a JSON array by selecting specific keys from an object using a group separator query. The output is an array of the values corresponding to the specified keys.

```sh
'"a","b","c"'
```

--------------------------------

### Save JQL output to a file

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Saves the result of a JQL query to a specified output file. Ensure the input JSON file exists.

```sh
jql '"a"' input.json > output.json
```

--------------------------------

### Flattening Nested Arrays with JQL

Source: https://github.com/yamafaktory/jql/blob/main/PERFORMANCE.md

Compares the performance of JQL's '..' operator for flattening nested arrays against JQ's 'flatten' function. Both commands process the same input.

```bash
echo '[1, [2], [[3]]]' | jq 'flatten'
```

```bash
echo '[1, [2], [[3]]]' | jql '..'
```

--------------------------------

### Extracting a Field from a JSON Object with JQL

Source: https://github.com/yamafaktory/jql/blob/main/PERFORMANCE.md

Compares the performance of JQL's field access '"foo"' against JQ's '.foo' for extracting a specific field from a JSON object. Both commands process the same input.

```bash
echo '{ "foo": "bar" }' | jq '.foo'
```

```bash
echo '{ "foo": "bar" }' | jql '"foo"'
```

--------------------------------

### Select Multiple Object Keys

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Retrieves values for multiple specified keys from a JSON object. The output is a new object containing only the selected key-value pairs.

```sh
'{"c","a"}'
```

--------------------------------

### Read JQL query from stdin

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Reads JSON data from standard input and processes it with a JQL query. Useful for piping data from other commands.

```sh
cat test.json | jql '"a"'
```

--------------------------------

### Select Array Elements by Index

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Selects specific elements from a JSON array using an array of indices. The order of indices in the query determines the order of elements in the output array.

```sh
'[2,1]'
```

--------------------------------

### Select Object Elements by Index

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Selects key-value pairs from a JSON object based on their insertion order using indices. The output is a new object with the selected pairs.

```sh
'{2,0}'
```

--------------------------------

### Select Object Value by Key

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Retrieves the value associated with a specific key from a JSON object.

```sh
'"c"'
```

--------------------------------

### Select Object Range by Index

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Selects a range of key-value pairs from a JSON object based on their insertion order. Supports natural, reversed, and open-ended ranges.

```sh
'{2:1}'
```

--------------------------------

### Select Array Range

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Selects a range of elements from a JSON array. Supports natural, reversed, and open-ended ranges.

```sh
'[2:1]'
```

--------------------------------

### Flatten Nested Arrays and Objects

Source: https://github.com/yamafaktory/jql/blob/main/README.md

Recursively flattens nested arrays and objects into a single-level structure. For objects, keys are concatenated with dots.

```sh
'..'
```

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