How to check if a List contains all the elements of Another List in Dart

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How to check if a List contains all the elements of Another List in Dart ?

Answer

To check if a list contains all the elements of another list in Dart, you can use the containsAll method.

✐ Examples

1 Check if List Contains All Elements of Another List (Positive Scenario)

In this example,

We create two lists named list1 and list2 with different values.
We use the containsAll method of list1 to check if it contains all elements of list2.
The containsAll method returns true if all elements of list2 are present in list1; otherwise, it returns false.
Finally, we print the result to standard output.

Dart Program

void main() {
  List<int> list1 = [1, 2, 3, 4, 5];
  List<int> list2 = [2, 4];
  bool result = list1.containsAll(list2);
  print("List 1 contains all elements of List 2: \$result");
}

Output

List 1 contains all elements of List 2: true

2 Check if List Contains All Elements of Another List (Negative Scenario)

In this example,

We create two lists named list1 and list2 with different values.
We use the containsAll method of list1 to check if it contains all elements of list2.
The containsAll method returns true if all elements of list2 are present in list1; otherwise, it returns false.
Finally, we print the result to standard output.

Dart Program

void main() {
  List<int> list1 = [1, 2, 3, 4, 5];
  List<int> list2 = [2, 4, 6];
  bool result = list1.containsAll(list2);
  print("List 1 contains all elements of List 2: \$result");
}

Output

List 1 contains all elements of List 2: false

Summary

In this tutorial, we learned How to check if a List contains all the elements of Another List in Dart language with well detailed examples.

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How to check if a List contains all the elements of Another List in Dart

How to check if a List contains all the elements of Another List in Dart ?

Answer

✐ Examples

1 Check if List Contains All Elements of Another List (Positive Scenario)

Dart Program

Output

2 Check if List Contains All Elements of Another List (Negative Scenario)

Dart Program

Output

Summary

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