Dart编程实例 - 集合 Set
void main() {
Set numberSet = new Set();
numberSet.add(100);
numberSet.add(20);
numberSet.add(5);
numberSet.add(60);
numberSet.add(70);
print("Default implementation :${numberSet.runtimeType}");
// all elements are retrieved in the order in which they are inserted
for(var no in numberSet) {
print(no);
}
}