34_set_and_hashset.dart

// Objectives
// 1. Sets:
//  --> Unordered Collection
// 	--> All elements are unique

void main() {

	Set<String> countries = Set.from(["USA", "INDIA", "CHINA"]);     // Method 1: From a list
	countries.add("Nepal");
	countries.add("Japan");


	Set<int> numbersSet = Set();                                   // Method 2: Using Constructor
	numbersSet.add(73);     // Insert Operation
	numbersSet.add(64);
	numbersSet.add(21);
	numbersSet.add(12);

	numbersSet.add(73);     // Duplicate entries are ignored
	numbersSet.add(73);     // Ignored

	numbersSet.contains(73);        // returns true if the element is found in set
	numbersSet.remove(64);          // returns true if the element was found and deleted
	numbersSet.isEmpty;             // returns true if the Set is empty
	numbersSet.length;              // returns number of elements in Set
//	numbersSet.clear();             // Deletes all elements

	print("\n");

	for (int element in numbersSet) {                  // Using Individual Element ( Objects )
		print(element);
	}

	print("\n");

	numbersSet.forEach((element) => print(element));   // Using Lambda
}