How To Convert List To Set In Flutter – Easy Flutter Code Examples

In this tutorial, we’ll learn how to convert list to set in Flutter. We’ll be using multiple Flutter code examples to understand it practically.

After reading this post, you’ll have a detailed practical knowledge of how to properly convert list to set in Flutter.

So without any delay, let’s just dive right into its practical implementation.

Introduction: Convert List To Set In Flutter

As the title suggests, it defines the process of converting Flutter list to set. We’ll be using a toSet() method to convert list to set.

Let’s now understand it practically using multiple examples.

Syntax of toSet() Method

listName.toSet()

This method can be implemented simply like this. It’ll convert the specified list to set.

Converting Flutter List To Set (Easy Examples)

See below examples to understand the practical use of toSet() method.

Example 1: Convert List To Set In Flutter

Let’s first create a list in Flutter. After that, we’ll convert it to a set.

List simpleList=[1,2,4,3,5,6,7];
final setValues= simpleList.toSet();
print(setValues);

Output

{1, 2, 4, 3, 5, 6, 7}

The specified Flutter list is successfully converted to set as shown in the above output.

Example 2: toSet() Method removes Duplicate Items

We can use this method to convert list to set as well as remove the duplicate items from list. See below code:

List simpleList=[1,2,4,3,2,2,5,3,6,7,5,7];
print(simpleList); 
final setValues= simpleList.toSet();
print(setValues);

Output

[1, 2, 4, 3, 2, 2, 5, 3, 6, 7, 5, 7]  //current list(with duplicate items)
{1, 2, 4, 3, 5, 6, 7}            // list converted to set (no duplicate items)

Example 3: toSet() Method Returns New Set

List simpleList=[1,2,4,3];
print(simpleList.toSet());
print(simpleList);

Output

{1, 2, 4, 3}  // new set returned
[1, 2, 4, 3]  // current list is not updated

Conclusion

To conclude this post, hope you now have a proper and detailed practical knowledge of how to convert list to set in Flutter. I’ll be delighted to receive your feedback on this post.

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