Dart Tutorials

Dart List isEmpty
Syntax & Examples

Syntax of List.isEmpty

The syntax of List.isEmpty property is:

 bool isEmpty

This isEmpty property of List whether this collection has no elements.

Return Type

List.isEmpty returns value of type bool.


✐ Examples

1 Check if a list of numbers is empty

In this example,

  1. We create a list named numbers with elements [1, 2, 3].
  2. We use the isEmpty property to check if the list is empty.
  3. The result is stored in isEmptyNumbers.
  4. We print whether the list is empty to standard output.

Dart Program

void main() {
  List<int> numbers = [1, 2, 3];
  bool isEmptyNumbers = numbers.isEmpty;
  print('Is numbers empty? $isEmptyNumbers'); // Output: Is numbers empty? false
}

Output

Is numbers empty? false

2 Check if a list of characters is empty

In this example,

  1. We create a list named characters with elements ['a', 'b', 'c'].
  2. We use the isEmpty property to check if the list is empty.
  3. The result is stored in isEmptyCharacters.
  4. We print whether the list is empty to standard output.

Dart Program

void main() {
  List<String> characters = ['a', 'b', 'c'];
  bool isEmptyCharacters = characters.isEmpty;
  print('Is characters empty? $isEmptyCharacters'); // Output: Is characters empty? false
}

Output

Is characters empty? false

3 Check if a list of strings is empty

In this example,

  1. We create an empty list named strings.
  2. We use the isEmpty property to check if the list is empty.
  3. The result is stored in isEmptyStrings.
  4. We print whether the list is empty to standard output.

Dart Program

void main() {
  List<String> strings = [];
  bool isEmptyStrings = strings.isEmpty;
  print('Is strings empty? $isEmptyStrings'); // Output: Is strings empty? true
}

Output

Is strings empty? true

Summary

In this Dart tutorial, we learned about isEmpty property of List: the syntax and few working examples with output and detailed explanation for each example.