Gato

Gato is a dart utility library inspired by javascript lodash library.

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Installation

1. Depend on it

Add gato: ^0.0.5 to your pubspec.yaml dependencies:

dependencies:
  gato: ^0.0.5

2. Import it

Now in your Dart code, you can use:

import 'package:gato/gato.dart' as gato;

Map functions

Get

Get value from a Map by path. Use dot notation in [path] to access nessted keys.

gato.get<T>(Map<String, dynamic> map, String path, {T Function(dynamic)? converter})

Arguments

• map (Map<String, dynamic>): The map you want to get value from.
• path (String): The path of the property to get.
• converter (T Function(dynamic)?): The function to cast the value to a custom type

Returns

• <T>|null: Returns the resolved value or null if the path is not found.

Example

Map map = {'a': {'b': 1}, 'c': '0xFFB74093'};
var b = gato.get(map, 'a.b');
var b = gato.get<int>(map, 'a.b');

Color color = gato.get<Color>(map, 'c', converter: (value) => Color(int.parse(value)));

Set

Sets the value at path of map. If a portion of path doesn't exist, it's created.

Map<String, dynamic> set<T>(Map<String, dynamic> map, String path, T value)

Arguments

• map (Map<String, dynamic>): The map to modify.
• path (String): The path of the property to set.
• value (T): The value to set.

Returns

• Map<String, dynamic>: Returns updated map.

Example

Map map = {'a': {'b': 1}};
map = gato.set(map, 'a.b', 2);
or
map = gato.set<int>(map, 'a.b', 2);

Unset

Removes the property at path of map.

Map<String, dynamic> unset(Map<String, dynamic> map, String path)

Arguments

• map (Map<String, dynamic>): The map to modify.
• path (String): The path of the property to remove.

Returns

• Map<String, dynamic>: Returns updated map.

Example

Map map = {'a': {'b': 1}, 'c': 2};
map = gato.set(map, 'c'); // {'a': {'b': 1}}