How to Join Lists in Dart - Step by Step Examples

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How to Join Lists in Dart ?

Answer

To join lists in Dart, you can use the `addAll` method to combine multiple lists into a single list.

✐ Examples

1 Join Two Lists of Integers

In this example,

We create two lists named list1 and list2 with integer values.
We create a new list named joinedList and use the addAll method to add all elements from list1 and list2 to joinedList.
Finally, we print the joined list to verify the result.

Dart Program

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

Output

Joined List: [1, 2, 3, 4, 5, 6]

2 Join Multiple Lists of Strings

In this example,

We create three lists named listA, listB, and listC with string values.
We create a new list named resultList and use the addAll method to add all elements from listA, listB, and listC to resultList.
Finally, we print the joined list to verify the result.

Dart Program

void main() {
  List<String> listA = ['apple', 'banana'];
  List<String> listB = ['cherry', 'date'];
  List<String> listC = ['fig', 'grape'];
  List<String> resultList = [];
  resultList.addAll(listA);
  resultList.addAll(listB);
  resultList.addAll(listC);
  print('Joined List: \$resultList');
}

Output

Joined List: [apple, banana, cherry, date, fig, grape]

Summary

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

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