Programming Articles - Page 2278 of 3366

To check if Hashtable contains a specific key, the code is as follows −Exampleusing System; using System.Collections; public class Demo {    public static void Main()    public static void Main(){       Hashtable hash = new Hashtable();       hash.Add("One", "Katie");       hash.Add("Two", "John");       hash.Add("Three", "Barry");       hash.Add("Four", "Mark");       hash.Add("Five", "Harry");       hash.Add("Six", "Nathan");       hash.Add("Seven", "Tom");       hash.Add("Eight", "Andy");       hash.Add("Nine", "Illeana");       hash.Add("Ten", "Tim");       Console.WriteLine("Hashtable Key and Value pairs...");       ... Read More

To check if Hashtable is read-only, the code is as follows −Example Live Demousing System; using System.Collections; public class Demo {    public static void Main(){       Hashtable hash = new Hashtable();       hash.Add("One", "Katie");       hash.Add("Two", "John");       hash.Add("Three", "Barry");       hash.Add("Four", "");       hash.Add("Five", "Harry");       hash.Add("Six", "F");       hash.Add("Seven", "Tom");       hash.Add("Eight", "Andy");       hash.Add("Nine", "I");       hash.Add("Ten", "Tim");       Console.WriteLine("Hashtable Key and Value pairs...");       foreach(DictionaryEntry entry in hash){     ... Read More

To check if the SortedSet contains a specific element, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main(){       SortedSet set1 = new SortedSet();       set1.Add("CD");       set1.Add("CD");       set1.Add("CD");       set1.Add("CD");       Console.WriteLine("Elements in SortedSet1...");       foreach (string res in set1){          Console.WriteLine(res);       }       Console.WriteLine("Does the SortedSet1 contains the element DE? = "+set1.Contains("DE"));       SortedSet set2 = new SortedSet();       set2.Add("BC");   ... Read More

To check if a Stack has elements, use the C# Contains() method. Following is the code −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main(){       Stack stack = new Stack();       stack.Push(100);       stack.Push(150);       stack.Push(175);       stack.Push(200);       stack.Push(225);       stack.Push(250);       stack.Push(300);       stack.Push(400);       stack.Push(450);       stack.Push(500);       Console.WriteLine("Elements in the Stack:");       foreach(var val in stack){          Console.WriteLine(val);       ... Read More

The lambda expressions are anonymous functions and don't have any return type, access modifier and not belonging to any class. It can be used to simplify the implementation of the abstract method in a functional interface. Whenever there is a functional interface, we can use lambda expressions instead of anonymous inner classes.Syntax([comma seperated argument-list]) -> {body}Example@FunctionalInterface interface BonusCalculator {    public double calcBonus(int amount); } class EmpDetails {    public void getBonus(BonusCalculator calculator, int amount) {       double bonus = calculator.calcBonus(amount);       System.out.println("Bonus: " + bonus);    } } public class LambdaExpressionTest {    public static void main(String[] ... Read More

To check if a SortedSet object is a proper superset of the specified collection, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main(){       SortedSet set1 = new SortedSet();       set1.Add(10);       set1.Add(20);       set1.Add(30);       set1.Add(40);       set1.Add(50);       set1.Add(60);       Console.WriteLine("Elements in SortedSet1...");       foreach (int res in set1){          Console.WriteLine(res);       }       SortedSet set2 = new SortedSet();       ... Read More

To check if a SortedSet object is a proper subset of the specified collection, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main(){       SortedSet set1 = new SortedSet();       set1.Add(20);       set1.Add(40);       set1.Add(60);       set1.Add(80);       set1.Add(100);       set1.Add(120);       set1.Add(140);       Console.WriteLine("Elements in SortedSet1...");       foreach (int res in set1){          Console.WriteLine(res);       }       SortedSet set2 = new SortedSet(); ... Read More

To check if the Hashtable contains a specific value, the code is as follows −Example Live Demousing System; using System.Collections; public class Demo {    public static void Main(){       Hashtable hash = new Hashtable();       hash.Add("1", "A");       hash.Add("2", "B");       hash.Add("3", "C");       hash.Add("4", "D");       hash.Add("5", "E");       hash.Add("6", "F");       hash.Add("7", "G");       hash.Add("8", "H");       hash.Add("9", "I");       hash.Add("10", "J");       Console.WriteLine("Hashtable Key and Value pairs...");       foreach(DictionaryEntry entry in ... Read More

To check if Hashtable has a fixed size, the code is as follows −Example Live Demousing System; using System.Collections; public class Demo {    public static void Main(){       Hashtable hash = new Hashtable(10);       hash.Add("1", "A");       hash.Add("2", "B");       hash.Add("3", "C");       hash.Add("4", "D");       hash.Add("5", "E");       hash.Add("6", "F");       hash.Add("7", "G");       hash.Add("8", "H");       hash.Add("9", "I");       hash.Add("10", "J");       Console.WriteLine("Is the Hashtable having fixed size? = "+hash.IsFixedSize);    } }OutputThis will ... Read More

To check if an element is in the Queue, the code is as follows −Example Live Demousing System; using System.Collections.Generic; public class Demo {    public static void Main(){       Queue queue = new Queue();       queue.Enqueue("Electronics");       queue.Enqueue("Accessories");       queue.Enqueue("Toys");       queue.Enqueue("Books");       queue.Enqueue("Furniture");       queue.Enqueue("Clothing");       queue.Enqueue("Footwear");       queue.Enqueue("Cookware");       queue.Enqueue("Pet Supplies");       Console.WriteLine("Elements in the Queue...");       foreach(var element in queue){          Console.WriteLine(element);       }       Console.WriteLine("Do ... Read More