MapConverter

Description

The MapConverter class allows you to convert arbitrary values into map objects using the following extended conversion rules:

• Objects: property names as keys, property values as values
• Arrays: element indexes as keys, elements as values

Static methods

toMap

Converts a value into a map object or returns an empty map when the conversion is not possible.

static Map<String, dynamic> toMap(value)

• value: dynamic - value to convert.
• returns: Map<String, dynamic> - map object or empty map when the conversion is not supported.

toMapWithDefault

Converts a value into a map object or returns a given default when the conversion is not possible.

static Map<String, dynamic> toMapWithDefault(value, Map<String, dynamic> defaultValue)

• value: dynamic - value to convert.
• defaultValue: Map<String, dynamic> - default value.
• returns: Map<String, dynamic> - map object or empty map when the conversion is not supported.

toNullableMap

Converts a value into a map object or returns null when the conversion is not possible.

static Map<String, dynamic>? toNullableMap(value)

• value: dynamic - value to convert.
• returns: Map<String, dynamic>? - map object or null when the conversion is not supported.

Examples

var value1 = MapConverted.toNullableMap('ABC'); // Result: null
var value2 = MapConverted.toNullableMap({ 'key': 123 }); // Result: { 'key': 123 }
var value3 = MapConverted.toNullableMap([1,2,3]); // Result: { '0': 1, '1': 2, '2': 3 }