How to Copy a List in Dart - Step by Step Examples

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How to Copy a List in Dart ?

Answer

In Dart, you can copy a list by creating a new list and adding all elements from the original list to the new list.

✐ Examples

1 Copy List by Initializing a New List

In this example,

We create an original list named originalList with some elements.
We create a new list named copiedList and initialize it with the elements of originalList.
After the operation, copiedList contains all elements of originalList.
Finally, we print both lists to demonstrate the copy operation.

Dart Program

void main() {
  List<int> originalList = [1, 2, 3, 4];
  List<int> copiedList = List<int>.from(originalList);

  print('Original List: $originalList');
  print('Copied List: $copiedList');
}

Output

Original List: [1, 2, 3, 4]
Copied List: [1, 2, 3, 4]

2 Copy List Using Spread Operator

In this example,

We create an original list named originalList with some elements.
We create a new list named copiedList and copy elements from originalList using the spread operator (...).
After the operation, copiedList contains all elements of originalList.
Finally, we print both lists to demonstrate the copy operation.

Dart Program

void main() {
  List<int> originalList = [1, 2, 3, 4];
  List<int> copiedList = [...originalList];

  print('Original List: $originalList');
  print('Copied List: $copiedList');
}

Output

Original List: [1, 2, 3, 4]
Copied List: [1, 2, 3, 4]

Summary

In this tutorial, we learned How to Copy a List in Dart language with well detailed examples.

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How to Copy a List in Dart - Step by Step Examples

How to Copy a List in Dart ?

Answer

✐ Examples

1 Copy List by Initializing a New List

Dart Program

Output

2 Copy List Using Spread Operator

Dart Program

Output

Summary

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