Dart List removeRange()
Syntax & Examples

Syntax of List.removeRange()

The syntax of List.removeRange() method is:

 void removeRange(int start, int end)

This removeRange() method of List removes a range of elements from the list.

Parameters

ParameterOptional/RequiredDescription
startrequiredthe starting index of the range to be removed from the list
endrequiredthe ending index of the range to be removed from the list (exclusive)

Return Type

List.removeRange() returns value of type void.


✐ Examples

1 Remove elements from index 1 to 2 from the list of numbers

In this example,

  1. We create a list named numbers containing the integers [1, 2, 3, 4, 5].
  2. We then use the removeRange() method to remove elements from index 1 (value 2) to index 3 (value 3) from the list.
  3. As a result, the list becomes [1, 4, 5].
  4. We print the modified list to standard output.

Dart Program

void main() {
  List<int> numbers = [1, 2, 3, 4, 5];
  numbers.removeRange(1, 3); // Output: [1, 4, 5]
  print(numbers);
}

Output

[1, 4, 5]

2 Remove elements from index 0 to 1 from the list of characters

In this example,

  1. We create a list named characters containing the characters ['a', 'b', 'c', 'd'].
  2. We then use the removeRange() method to remove elements from index 0 (value 'a') to index 2 (value 'c') from the list.
  3. As a result, the list becomes ['c', 'd'].
  4. We print the modified list to standard output.

Dart Program

void main() {
  List<String> characters = ['a', 'b', 'c', 'd'];
  characters.removeRange(0, 2); // Output: ['c', 'd']
  print(characters);
}

Output

[c, d]

3 Remove elements from index 1 to 3 from the list of words

In this example,

  1. We create a list named words containing the strings ['apple', 'banana', 'cherry', 'date'].
  2. We then use the removeRange() method to remove elements from index 1 (value 'banana') to index 4 (value 'date') from the list.
  3. As a result, the list becomes ['apple'].
  4. We print the modified list to standard output.

Dart Program

void main() {
  List<String> words = ['apple', 'banana', 'cherry', 'date'];
  words.removeRange(1, 4); // Output: ['apple']
  print(words);
}

Output

[apple]

Summary

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