How to Concatenate Two Lists in Dart

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How to Concatenate Two Lists in Dart ?

Answer

To concatenate two lists in Dart, you can use the spread operator (...) or the addAll method.

✐ Examples

1 Concatenate Lists Using Spread Operator

In this example,

We create two lists: list1 and list2 with initial values.
We use the spread operator (...) to concatenate list2 to list1.
Finally, we print the concatenated list to standard output.

Dart Program

void main() {
  List<int> list1 = [1, 2, 3];
  List<int> list2 = [4, 5, 6];
  List<int> concatenatedList = [...list1, ...list2];
  print('Concatenated list: \$concatenatedList');
}

Output

Concatenated list: [1, 2, 3, 4, 5, 6]

2 Concatenate Lists Using addAll Method

In this example,

We create two lists: list1 and list2 with initial values.
We use the addAll method to append all elements of list2 to list1.
Finally, we print the concatenated list to standard output.

Dart Program

void main() {
  List<int> list1 = [1, 2, 3];
  List<int> list2 = [4, 5, 6];
  list1.addAll(list2);
  print('Concatenated list: \$list1');
}

Output

Concatenated list: [1, 2, 3, 4, 5, 6]

Summary

In this tutorial, we learned How to Concatenate Two Lists in Dart language with well detailed examples.

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How to Concatenate Two Lists in Dart

How to Concatenate Two Lists in Dart ?

Answer

✐ Examples

1 Concatenate Lists Using Spread Operator

Dart Program

Output

2 Concatenate Lists Using addAll Method

Dart Program

Output

Summary

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