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import 'package:collection/collection.dart';
void main() {
final inputs = ['a', 'b', 'c', 'd', 'e', 'f'];
final indexes = inputs.mapIndexed((index, element) => index).toList();
inputs.forEachIndexed((index, element) {
print('index: $index, element: $element');
});
print(indexes);
}