Flutter
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Dart 3.6
Kodebits Day 26: Set Membership Check
May 20 2026
Practice collections with a short dart challenge.
What does this print?
void main() {
final s = {4, 5};
print(s.contains(4));
print(s.length);
}
Try it in the online Dart Playground →
[spoiler title="Solution"]
Answer:
true 2
Explanation:
The set `{4, 5}` contains two elements. `contains(4)` returns `true` because 4 is in the set, and `length` returns 2.
[/spoiler]