This document discusses inheritance and polymorphism in C#. It defines inheritance as allowing a derived class to inherit characteristics from a parent class. Methods and data from the parent class can be accessed differently depending on visibility modifiers like public, private, and protected. Inheritance allows class hierarchies to be formed. Polymorphism is enabled through inheritance and overriding methods in derived classes. Examples are provided to demonstrate inheritance, overriding methods, and class hierarchies.
The genetic characters transmitted from parent to offspring, taken collectively.
Something, as a quality, characteristic, or other immaterial possession, received from progenitors or predecessors as if by succession.
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PYTHON-Chapter 3-Classes and Object-oriented Programming: MAULIK BORSANIYAMaulik Borsaniya
Classes and Object-oriented Programming:
Classes: Creating a Class, The Self Variable, Constructor, Types of Variables, Namespaces, Types of Methods (Instance Methods, Class Methods, Static Methods), Passing Members of One Class to Another Class, Inner Classes
Inheritance and Polymorphism: Constructors in Inheritance, Overriding Super Class Constructors and Methods, The super() Method, Types of Inheritance, Single Inheritance, Multiple Inheritance, Method Resolution Order (MRO), Polymorphism, Duck Typing Philosophy of Python, Operator Overloading, Method Overloading, Method Overriding
Abstract Classes and Interfaces: Abstract Method and Abstract Class, Interfaces in Python, Abstract Classes vs. Interfaces,
The genetic characters transmitted from parent to offspring, taken collectively.
Something, as a quality, characteristic, or other immaterial possession, received from progenitors or predecessors as if by succession.
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@ Kindly Follow my Instagram Page to discuss about your mental health problems-
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@ Appreciate my work:
-----> behance.net/burhanahmed1
Thank-you !
PYTHON-Chapter 3-Classes and Object-oriented Programming: MAULIK BORSANIYAMaulik Borsaniya
Classes and Object-oriented Programming:
Classes: Creating a Class, The Self Variable, Constructor, Types of Variables, Namespaces, Types of Methods (Instance Methods, Class Methods, Static Methods), Passing Members of One Class to Another Class, Inner Classes
Inheritance and Polymorphism: Constructors in Inheritance, Overriding Super Class Constructors and Methods, The super() Method, Types of Inheritance, Single Inheritance, Multiple Inheritance, Method Resolution Order (MRO), Polymorphism, Duck Typing Philosophy of Python, Operator Overloading, Method Overloading, Method Overriding
Abstract Classes and Interfaces: Abstract Method and Abstract Class, Interfaces in Python, Abstract Classes vs. Interfaces,
Hlutbundin forritun er öflug leið til að búa til hugbúnað. Hins vegar er auðvelt að gleyma eiginleikum hlutbundinna mála. Í þessum fyrri hluta um þetta efni munum við rifja upp hugtök eins og encapsulation, skil og polymorphma. Við munum líka skoða nokkur prinsipp eins og Separtaion of Concern (SoC).
Í þessu fyrirlestri mun ég upplýsa leyndarmál sem aðeins góðir forritarar vita.
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Object Oriented Programming is revisited. It is assumed that students know OO languages so this is more of a review. We will cover concepts such as encapsulation, interfaces and polymorphism. These are important concepts that students must understand in order to write flexible and lasting code. We look at several design principles.
We also look at software design and take an example from a video games.
In this lecture we will also reveal the secret of programming which all good programmers must know.
This presentation deals with pure object oriented concepts and defines basic principles of OOP's like Encapsulation , polymorphism , Inheritance and Abstraction.
There is great research in the field of data security these days. Storing information digitally in the cloud and transferring it over the internet proposes risks of disclosure and unauthorized access, thus users, organizations and businesses are adapting new technology and methods to protect their data from breaches. In this paper, we introduce a method to provide higher security for data transferred over the internet, or information based in the cloud. The introduced method for the most part depends on the Advanced Encryption Standard (AES) algorithm. Which is currently the standard for secret key encryption. A standardized version of the algorithm was used by The Federal Information Processing Standard 197 called Rijndael for the Advanced Encryption Standard. The AES algorithm processes data through a combination of Exclusive-OR operations (XOR), octet substitution with an S-box, row and column rotations, and a MixColumn operations. The fact that the algorithm could be easily implemented and run on a regular computer in a reasonable amount of time made it highly favorable and successful.
In this paper, the proposed method provides a new dimension of security to the AES algorithm by securing the key itself such that even when the key is disclosed, the text cannot be deciphered. This is done by enciphering the key using Output Feedback Block Mode Operation. This introduces a new level of security to the key in a way in which deciphering the data requires prior knowledge of the key and the algorithm used to encipher the key for the purpose of deciphering the transferred text.
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Abstract
There is great research going on in the field of data security nowadays. Protecting information from disclosure and breach is of high importance to users personally and to organizations and businesses around the world, as most of information currently are sensitive electronic information transferred over the internet and stored in cloud based system. In this paper, we propose a method to increase the security of messages transferred on the internet, or information stored in the cloud. Our proposed method mainly relies on the Triple Data Encryption Standard (TDES) algorithm. TDES is intact the Data Encryption Standard repeated three times in succession to encrypt data. TDES is considered highly secure as there is no applicable method to break the code itself without knowing the key. We propose to encrypt the key using Cipher Feedback Block algorithm, before using TDES to encrypt data. Such that even when the key is disclosed, the key itself cannot decipher the ciphered text without enciphering the key with CFB. This introduces a new dimension of security to the TDES algorithm.
The method introduced in this paper increases the security of the TDES algorithm using CFB algorithm by increasing the key security, such that it is actually not possible to decipher the text without prior knowledge and agreement of key and algorithms used.
Keywords: Data Encryption Standard, Triple Data Encryption Algorithm, Cipher Feedback Block.
Abstract
Digital images can be changed easily nowadays through the use of sophisticated software to edit images such as (Adobe Photoshop®). You can look at some manipulated pictures along the lines of the original images without any suspicion that they are also modified. Accordingly, the use of such software to edit the image makes ratification a difficult task and the use of this image in the courts for proving may become impossible.In this paper, a new method has been proposed for water fragile signs depending on the method of Pixel-wise. The proposed method is based on the included secret watermark and check bits in the green layer to the image of the colorful cover with the size of 512x512. The process of including watermark deals with the green class as a chess board with 512 x 512 sizes to avoid the inclusion of sequential bits in the spatial areas of the image of the cover. The process of extracting and discriminating the manipulation of watermark is used to determine whether the manipulation of the image containing watermark was done by an opponent or not. Therefore, the use of the extracted watermark and matrix manipulation to check the image containing watermark sent. Depending on the experimental results, the proposed method provides high quality, low distortion in the images contained watermark PSNR depending on their values. Also, the ability to recognize manipulation in the picture containing watermark in cases such as adding objects to the image containing the watermark, and the application of JPEG compression on image containing watermark, and removing objects from the image containing watermark, repeating the object image containing watermark, and adding a text on image including watermark.
Keywords: Check-bits, Fragile watermarking, PSNR, Secret watermark, Watermarked-image.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
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Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
2. Inheritance
▪ Inheritance allows a software developer to derive a new
class from an existing one.
▪ The existing class is called the parent, super, or base class.
▪ The derived class is called a child or subclass.
▪ The child inherits characteristics of the parent.
▪ Methods and data defined for the parent class.
▪ The child has special rights to the parents methods and data.
▪ Public access like anyone else
▪ Protected access available only to child classes.
▪ The child has its own unique behaviors and data.
3. Inheritance
▪ Inheritance relationships
are often shown
graphically in a class
diagram, with the arrow
pointing to the parent
class.
▪ Inheritance should create a
relationship, meaning the
child is a more specific
version of the parent.
Animal
Bird
4. Declaring a Derived Class
▪ Define a new class DerivedClass which extends
BaseClass
class BaseClass
{
// class contents
}
class DerivedClass : BaseClass
{
// class contents
}
5. Controlling Inheritance
▪ A child class inherits the methods and data defined for the
parent class; however, whether a data or method member of
a parent class is accessible in the child class depends on the
visibility modifier of a member.
▪ Variables and methods declared with private visibility are
not accessible in the child class
▪ However, a private data member defined in the parent class is still
part of the state of a derived class.
▪ Variables and methods declared with public visibility are
accessible; but public variables violate our goal of
encapsulation
▪ There is a third visibility modifier that helps in inheritance
situations: protected.
6. Inheritance
class color
{ public color() {MessageBox.Show("color"); }
public void fill(string s) { (Messagebox.Show(s); }
}
class green : color
{ public green() {MessageBox.Show ("green"); } }
private void button1_Click(object sender, EventArgs e)
{ green g = new green();
g.fill("red");
}
7. Inheritance
class animal
{ public animal() {MessageBox.Show("animal"); }
public void talk() {MessageBox.Show("animal talk"); }
public void greet() {MessageBox.Show("animal say hello"); } }
class dog : animal
{ public dog() {MessageBox.Show("dog"); }
public void sing() {MessageBox.Show("dog can sing"); } }
private void button1_Click(object sender, EventArgs e)
{ animal a = new animal();
a.talk();
a.greet();
dog d = new dog();
d.sing();
d.talk();
d.greet();
}
8. Notes about Inheritance
➢ Constructor can't be inheritance, they just invoked.
➢ First call base then derived
➢ Destructor can't be inheritance they just invoked.
➢ First call derived then base
10. Inheritance
class animal
{ public animal() {MessageBox.Show("animal"); }
public void talk() {MessageBox.Show("animal talk"); }
public void greet() {MessageBox.Show("animal say hello"); }
~animal() {MessageBox.Show("animal Destructor"); } }
class dog : animal
{ public dog() {MessageBox.Show("dog"); }
public void sing() {MessageBox.Show("dog can sing"); }
~dog() {MessageBox.Show("dog Destructor"); } }
private void button1_Click(object sender, EventArgs e)
{ animal a = new animal();
a.talk();
a.greet();
dog d = new dog();
d.sing();
d.talk();
d.greet(); }
12. Examples:
Base Classes and Derived Classes
Base class Derived classes
Student GraduateStudent
UndergraduateStudent
Shape Circle
Triangle
Rectangle
Loan CarLoan
HomeImprovementLoan
MortgageLoan
Employee FacultyMember
StaffMember
Account CheckingAccount
SavingsAccount
13. Single Inheritance
▪ Some languages, e.g., C++, allow Multiple
inheritance, which allows a class to be
derived from two or more classes, inheriting
the members of all parents.
▪ C# and Java support single inheritance,
meaning that a derived class can have only
one parent class.
14. Class Hierarchies
▪ A child class of one parent can be the parent
of another child, forming a class hierarchy
Animal
Reptile Bird Mammal
Snake Lizard BatHorseParrot
17. Class Hierarchies
▪ An inherited member is continually passed
down the line
▪ Inheritance is transitive.
▪ Good class design puts all common features
as high in the hierarchy as is reasonable.
Avoids redundant code.
18. References and Inheritance
▪ An object reference can refer to an object of its
class, or to an object of any class derived from it by
inheritance.
▪ For example, if the Holiday class is used to derive a
child class called Friday, then a Holiday reference
can be used to point to a Fridayobject.
Holiday day;
day = new Holiday();
…
day = new Friday();
20. Type of Polymorphism
At run time, objects of a derived class may be treated as objects of a
base class in places such as method parameters and collections or arrays.
When this occurs, the object's declared type is no longer identical to its
run-time type.
Base classes may define and implement virtual methods, and derived
classes can override them, which means they provide their own
definition and implementation. At run-time, when client code calls the
method, the CLR looks up the run-time type of the object, and invokes
that override of the virtual method. Thus in your source code you can
call a method on a base class, and cause a derived class's version of the
method to be executed.
21. Overriding Methods
C# requires that all class definitions
communicate clearly their intentions.
The keywords virtual, override and new provide
this communication.
If a base class method is going to be overridden
it should be declared virtual.
A derived class would then indicate that it
indeed does override the method with the
override keyword.
22. Overriding Methods
▪ A child class can override the definition of an
inherited method in favor of its own
▪ That is, a child can redefine a method that it
inherits from its parent
▪ The new method must have the same signature
as the parent's method, but can have a different
implementation.
▪ The type of the object executing the method
determines which version of the method is
invoked.
23. Overriding Methods
If a derived class wishes to hide a method in
the parent class, it will use the new keyword.
This should be avoided.
24. Overloading vs. Overriding
▪ Overloading deals with
multiple methods in the
same class with the same
name but different
signatures
▪ Overloading lets you
define a similar
operation in different
ways for different data
▪ Example:
▪ int foo(string[] bar);
▪ int foo(int bar1, float a);
▪ Overriding deals with two
methods, one in a parent
class and one in a child
class, that have the same
signature
▪ Overriding lets you define
a similar operation in
different ways for different
object types
▪ Example:
▪ class Base {
▪ public virtual int foo() {}
}
▪ class Derived {
▪ public override int foo()
{}}
25. Example
public class Base
{
public virtual void Show()
{
MessageBox.Show("Show From Base Class.");
} }
public class Derived : Base
{
public override void Show()
{
MessageBox.Show("Show From Derived Class.");
} }