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Create Sets

This video was last updated on May 3 2022

Learn how to create sets, how to populate them with data and retrieve that data.

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So far, you’ve learned about two collection types in Dart. First you learned about a list where you can hold an ordered list of items. Then you learned about the map that allows you lookup values based on a key. Now, for the final fundamental collection type - the set.

var someSet = Set<int>();
var someSet = <int>{};
var someSet = { 1, 2, 3, 4, 1 };
print(someSet);
print(someSet.contains(1));
someSet.add(5);
someSet.remove(3);
for (var item in someSet) {
    print(item);
}

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