is_dart_empty_or_not #

A minimal Dart package providing concise extension methods for handling empty and zero values on core types (String, List, Set, Map, num, int, double).

• Purpose: Simplifies fallback logic and conditional actions for empty/zero values.
• Origin: Inspired by Dart empty patterns [String.isEmpty, List.isEmpty etc..], see more about it Dart non-nullable initialization pattern

Features #

• Extension methods for String, List, Set, Map, num, int, double
• Fallback and conditional logic in a single call
• Zero dependencies

Quick Start #

# pubspec.yaml
dependencies:
  is_dart_empty_or_not: ^0.1.0

import 'package:is_dart_empty_or_not/is_dart_empty_or_not.dart';

final name = ''.whenEmptyUse('Anonymous'); // 'Anonymous'
final items = <int>[].whenEmptyUse([1, 2]); // [1, 2]
final value = 0.whenZeroUse(42); // 42

''.onNotEmpty((s) => print('Not empty!')); // (does nothing)

API Overview #

Examples #

String #

''.whenEmptyUse('default'); // 'default'
'foo'.whenEmptyUse('default'); // 'foo'

'bar'.onNotEmpty((s) => print(s)); // prints 'bar'
''.onEmpty(() => print('foo')); // prints 'foo'

List #

[].whenEmptyUse([1, 2]); // [1, 2]
[3].whenEmptyUse([1, 2]); // [3]

Set #

<Set<int>>{}.whenEmptyUse({1, 2}); // {1, 2}
{3}.whenEmptyUse({1, 2}); // {3}

Map #

<Map<int, String>>{}.whenEmptyUse({1: 'a'}); // {1: 'a'}
{2: 'b'}.whenEmptyUse({1: 'a'}); // {2: 'b'}

num/int/double #

0.whenZeroUse(42); // 42
1.whenZeroUse(42); // 1

0.0.whenZeroUse(3.14); // 3.14
2.7.whenZeroUse(3.14); // 2.7

(0).isZero; // true
(1).isZero; // false

(5).isPositive; // true
(-2).isPositive; // false

Changelog #

See CHANGELOG.md

License #

This package is licensed under the MIT License - see the LICENSE file for details.