Flutter
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Kodebits Day 46: Extension Method
Jun 24 2026
Practice extension methods with a short dart challenge.
What is the output?
extension on int {
int get doubled => this * 2;
}
void main() {
print(5.doubled);
}
Try it in the online Dart Playground →
[spoiler title="Solution"]
Answer:
10
Explanation:
Extension methods add functionality to existing types without modification.
[/spoiler]