Set

 /// Set : A set in Dart is an unordered collection of unique items

/// Features of Set : Different outputs, Unique elements, Unordered Index

import "dart:collection";

void main() {
  /// Set declaration
  // Set set1 = {"bus", "car", "truck"};
  // print(set1);
  // var set2 = {1, 2, 3, 4, 5, 6};
  // print(set2);

  /// 2nd Way to declare Set
  // Set set3 = new Set(); //Set declaration
  // set3.add(10);
  // set3.add(20);
  // print(set3);

  /// Declaring Empty Set
  // Set set4 = {};
  // print(set4);

  /// Declaring the Set type
  // Set set5 = {};  // Set declaration
  // var set6 = {};  // Map declaration
  // print(set5.runtimeType);
  // print(set6.runtimeType);

  /// printing Set elements using for in loop
  // Set set7 = {10, 20};
  // for(int i in set7) {
  //   print(i);
  // }

  /// Constant Set declaration using "const" keyword
  // Set set8 = const {10, 20, 30};
  //   //set8.add(40); //Unsupported Operation
  // for(int i in set8) {
  //   print(i);
  // }

  /// Set Methods
  // Set set9 = {10, 20, 5, 100, 90, 55};
  // print(set9);

  /// Adding new elements in Set
  // set9.add(85);   //Adding Single Value
  // print(set9);

  //set9.addAll([2, 33]);   //Adding Multiple Values in First Way
  // set9.addAll({2, 33});   //Adding Multiple Values in Second Way
  // print(set9);

  /// Removing element from Set
  // set9.remove(100);
  // print(set9);

  /// Length of Set
  // print(set9.length);

  /// Type of Set using runtimeType
  // print(set9.runtimeType);

  /// presence & absence of Set elements
  // print(set9.isEmpty);
  // print(set9.isNotEmpty);

  /// Clearing the Set elements
  // set9.clear();
  // print(set9);

  /// Declaring HashSet

  Set hash1 = HashSet();  //Declaring HashSet

  // hash1.add(10);  //Adding Single value in HashSet
  // print(hash1);

  hash1.addAll([10, 20, 30, 40]);   //Adding Multiple Values in HashSet
  print(hash1);
}