Explain What are Object Oriented Language and Object Based Language

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Aarthy_SP  

 Profile Answers by Aarthy_SP Questions by Aarthy_SP

• Member Since Dec-2008 | Dec 10th, 2008

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Any langauge based on encapsulation concpet and operations with the objects are called as Object Based language. Exmaple : VB is a Object based and not an Object oriented

Any langauge based on encapsulation concept and operations with the objects and also dealing with the inheritance and polymorphism are called as Object Oriented language. Exmaple : C++,C#

Arpit Mandloi

• Nov 25th, 2015

Object Based languages: 1. Object-based language doesn't support all the features of OOPs like Polymorphism and Inheritance 2. Object-based language has in-built object like JavaScript has window obje...

Sivavt

 Profile Answers by Sivavt Questions by Sivavt

• Mar 27th, 2012

Object based languages do not support inheritance & dynamic binding. Example, VB

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how to find out second maximum number in C#?

Roger Hyde

• Feb 6th, 2016

Linq makes this quite simple

Code
 

Vasyliy Zvarydchuk

 Profile Answers by Vasyliy Zvarydchuk Questions by Vasyliy Zvarydchuk

• Oct 28th, 2015

This code will work even if array will have a few maximums. Ex: (10, 8, 8, -2, 4, 10, 1) "c# static int GetSecondMax(int[] array) { if(array.Length < 2...

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C# requires only a single parameter for delegates: the method address. Unlike other languages, where the programmer must specify an object reference and the method to invoke, C# can infer both pieces of information by just specifying the method's name. For example, let's use System.Threading.ThreadStart: Foo MyFoo = new Foo();ThreadStart del = new ThreadStart(MyFoo.Baz);This means that delegates can...

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Answered by: Raghu

• Sep 29th, 2005

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This article is good.

Introduction

In this article I am going to share my knowledge on Delegates in C#.This would explain the Delegate using simple examples so that the beginner can understand the same.

What is Delegate?

Definition:

Delegate is type which  holds the method(s) reference in an object.
it is also reffered as a type safe function pointers.

Advantages:
.Encapsulating the method's call from caller
.Effective use of Delegat improves the performance of application.
.used to call a method asynchronously.

Declaration:

public delegate type_of_delegate delegate_name()

Example : public delegate int mydelegate(int delvar1,int delvar2)

Note:
.you can use delegeate without parameter or with parameter list
.you should follow the same syntax as in the method
(if you are reffering the method with two int parameters and int return type the delegate which you are declaring should be the same format.This is how it
is reffered as type safe function pointer)

Sample Program using Delegate :

public delegate double Delegate_Prod(int a,int b);

class Class1
{


static double fn_Prodvalues(int val1,int val2)
  {
return val1*val2;
  }
static void Main(string[] args)
{


//Creating the Delegate Instance
Delegate_Prod delObj = new Delegate_Prod(fn_Prodvalues);


Console.Write("Please Enter Values");

int v1 = Int32.Parse(Console.ReadLine());
int v2 = Int32.Parse(Console.ReadLine());

//use a delegate for processing

double res = delObj(v1,v2);
Console.WriteLine ("Result :"+res);
Console.ReadLine();

}
}


Explanation:

Here I have used a small program which demonstrates the use of delegate.

The delegate "Delegate_Prod" is declared with double return type and which accepts only two integer parameters.

Inside the Class the method named fn_Prodvalues is defined with double return type and two integer parameters.(The delegate and method is having the same signature and parameters type)

Inside the Main method the delegate instance is created and the function name is passed to the
delegate instance as following.

Delegate_Prod delObj = new Delegate_Prod(fn_Prodvalues);

After this we are accepting the two values from the user and passing those values to the delegate as we do using method .

delObj(v1,v2);

Here  delegate object encapsulates the method functionalities and return the result as we specified
in the method.

Multicast Delegate

What is Multicast Delegate? :
It is a Delegate which holds the reference of more than one methods.
Multicast delegates must contain only methods that return void, else there is a run-time exception.

Simple Program using Multicast Delegate
----------------------------------------

delegate void Delegate_Multicast(int x, int y);

Class Class2

{
static void Method1(int x, int y) {
 Console.WriteLine("You r in Method 1");
}
static void Method2(int x, int y) {
 Console.WriteLine("You r in Method 2");
}
public static void Main()
{
 Delegate_Multicast func = new Delegate_Multicast(Method1);

 func += new Delegate_Multicast(Method2);
 func(1,2);             // Method1 and Method2 are called
 func -= new Delegate_Multicast(Method1);
 func(2,3);             // Only Method2 is called
}

}
                           

Explanation:

In the above example you can see that two methods are defined named method1 and method2 which takes two integer parameters and return type as void.

In the main method the Delegate object is created using the following statement


Delegate_Multicast func = new Delegate_Multicast(Method1);

Then the Delegate is added using the += operator and removed using -= operator.

Naveen Kumar Shivanadri

• Sep 8th, 2016

Delegate is not type. It is just pointer method which is used to improve the performance. Suppose we want to execute a method 10 times by using calling method by using class name or instance, 10 time...

Rajesh Muurya

• Aug 9th, 2016

I have some doubt.
Raghus Says: Delegate is type which holds the method(s) reference in an object.
My question is if Delegate is type then how we create a object of delegate? Because, we know that we can create object only struct and class.

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sandya Kolipaka

• Nov 10th, 2016

Static void Main(string[] args)
{
var wc = new WebClient();
byte[] response = wc.UploadFile("http:// mysite . com/Tests/Test", "POST", "teste.xml");
string s = System.Text.Encoding.ASCII.GetString(response);
Console.WriteLine(s);
Console.ReadKey();
}

vishal

• Feb 15th, 2007

Use System.Net.WebClient Class use UploadFile method provided by the class. It accepts the Uri or string as destination and another parameter as location of file to be uploaded.

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What is advantage using avl tree instead of using binary search tree ?

simran

• Nov 23rd, 2016

In BST, the time complexity of search operation (average case) is taken to be O(log n). But in the worst case, i.e the degenerate trees/skewed trees time complexity of search operation is O(n) which c...

kirubasri

• Sep 8th, 2015

Better search times for keys

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Write C# code to divide two numbers without using the division and modulus operator

Sujit

• Feb 18th, 2019

Keep on subtracting divisor from dividend until dividend is 0 and return the count as quotient.

Pushpa Sundar

• Mar 16th, 2018

"java import java.util.Scanner; public class Divition { public static void main(String[] args) { Scanner scn=new Scanner(System.in); System.out.println("Enter the Divi...

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S Manasa

• Jul 8th, 2019

Generally, the access modifier of the property is considered as the access modifier of both the accessors if no access modifier is specified for the accessors. Only one of the accessor can be specifi...

LordAlex

 Profile Answers by LordAlex Questions by LordAlex

• Nov 3rd, 2011

The accessor modifier must declare an accessibility that is more restrictive than the declared accessibility of the property itself.

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A) Making class as AbstractB) Having a Private constructorC) Making the class sealedD) Both A & B

Naveen Kumar Shivanadri

• Sep 8th, 2016

Answer is A is always correct and B is also correct only the situation when the class does not have the static methods on it (in the question, there is no mentioned that there is no static method in it)
So, only A is correct answer.

Naveen Kumar Shivanadr.

ramya

• Oct 13th, 2015

Making class as Abstract

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