The main difference between local and global variables is that local variables can be accessed only within the function or block in which they are defined, whereas global variables can be accessed globally throughout the entire program.
In this article, we will try to understand the fundamental concepts of local and global variables, their use cases, Pros and Cons, and how to use them effectively in our code.
Stack vs Heap: In C#, Stack and Heap are two important memory allocation structures that every programmer should understand.
The Stack is a Last-In-First-Out (LIFO) data structure that temporarily stores data with a short lifespan, such as function call parameters and local variables.
It is used for short-term memory allocation, ideal for data that is needed only within the scope of a method or function. The Data in the Stack memory is automatically deallocated when the method’s scope (function or block) is exited.
Stack memory is typically faster to allocate and deallocate than heap memory but has a fixed size, which can lead to stack overflow errors if exhausted.
On the other hand, A Heap is a dynamic memory allocation structure used for objects with a longer lifespan, but be aware of managing their memory properly (or relying on the garbage collector in C#).Â
Objects created using the new keyword are typically allocated on the Heap.
The main difference between the two is that Stack memory is allocated and deallocated in a predictable and deterministic manner, while Heap memory is allocated dynamically and can lead to fragmentation over time.
Difference between const and readonly:
The primary difference between read-only and const keywords is that const represents a compile-time constant, whereas read-only is a runtime constant.
The Constant variables must be initialized at compile-time with fixed values. Their values are known during compilation and, once assigned, cannot be changed afterwards.
On the other hand, Read-Only variables are also immutable. They can be assigned a value either at the time of declaration or at runtime within the constructor but cannot be modified afterwards for the life of the program.
C# Field Vs Property: The main difference between a Field and a Property in C# is that a field is simply a variable of any type declared within a class or struct, whereas a property is a class member that offers a convenient way to access, modify, or calculate the value of a private field.
Fields are standard class variables, and properties are an abstraction for accessing their values.
In this tutorial, you will learn about the difference between field and property in C# and how to use them effectively.
URL (Uniform Resource Locator) and URI (Uniform Resource Identifier) are both terms used to identify and locate resources on the internet. Despite being used interchangeably, there is a distinct difference between the two.
While a URL specifically provides the exact location of a resource on the internet, a URI can identify a resource in a broader sense and can include both its location (URL) and unique identifier (URN).
In this post, we will learn about the key differences between URL and URI and provides guidelines for choosing between them.
In this post, we will be discussing a common confusion among C# developers: the difference between == and equals in C#. Whether you are a beginner or an experienced developer, understanding the difference between these two operators is crucial for writing efficient and accurate code.
In C#, the equality operator ‘==’ evaluates the equality of two operands, while the
Object.Equals()method determines if two object instances are equal or not.
In this post, we will cover the purpose, usage, speed, and flexibility of ‘==’ and ‘.Equals()’, as well as some frequently asked questions. So, let’s get started!
In this post, We will learn about the SortedList and SortedDictionary in C# using some code examples. Furthermore, we will compare these two collections in a tabular format which will help us to understand the fundamental difference between SortedList and SortedDictionary in C#.
By the end of this post, you should have a good understanding of when to use SortedList and when to use SortedDictionary in your code.
C# provides several data types to store numerical values, and choosing the right one is important. In this article, we will try to understand the difference between int, Int16, Int32, and Int64 in C#.
You will learn about the size, minimum, and maximum values for each data type and when to use them appropriately.
Jump statements allow you to control the flow of your program. They are also known as control transfer statements. There are several types of jump statements in C#, including break, continue, goto, return, and throw.
In this post, we will try to learn different types of jump statements available in C# with multiple examples. Additionally, we will discuss how and where to use them.
is vs as operator in c#:
In C#, the IS and AS operators are essential keywords used to determine the type of an object during runtime.
The IS operator checks the type of an object and returns a boolean value, which is true if the object is of the same type and false if not. On the other hand, the AS operator not only checks the type of an object but also performs a type conversion if the object is compatible with the given type.
Duplicate data can cause a number of issues when working with SQL Server tables. Not only does it take up unnecessary space, but it can also lead to confusion and errors in reporting. In this blog post, we will explore several different ways to delete duplicate rows in SQL Server.
When comparing UNION with UNION ALL, there is a significant difference:
In this article, we will look at the differences between UNION and UNION ALL in SQL with multiple examples.
The Abstract Factory Design Pattern is a creational design pattern that provides a way to create families of related or dependent objects without specifying their concrete classes. This blog post will explore the Abstract Factory Design Pattern in C#, using a real-world example and providing code explanations.
In this article, We will explore the Singleton design pattern in C#, its use cases, and various ways to implement singleton class.
SOLID is a set of five design principles introduced by Robert C. Martin in 2000 to make code more maintainable, flexible, and scalable.
In this article, we will learn about five important SOLID principles and how they can be used with C# programming. We’ll also see practical examples to understand how to apply these principles in real-world situations.
SOLID is a widely recognized acronym that represents a set of five fundamental design principles in software development: the Single Responsibility Principle, Open-Closed Principle, Liskov Substitution Principle, Interface Segregation Principle, and Dependency Inversion Principle.Â
What is the Difference between Delete, Truncate, and Drop command?
The “DELETE” command removes one or more records from a table in the database, and the “TRUNCATE” command removes all rows from a table, but Still, it keeps the table structure, and the “DROP” command completely removes the entire table from the database.
What is the difference between the HAVING and WHERE clause? This is one of the most frequently asked questions in interviews, particularly among freshers.
The main difference between the WHERE and HAVING clauses in SQL is that the WHERE clause filters individual rows before grouping, while the HAVING clause filters groups of rows after grouping based on aggregate conditions such as MIN, MAX, SUM, AVG, COUNT, and so on.
In simple terms, WHERE is for filtering rows, and HAVING is for filtering groups.
Additionally, it is important to note that aggregate functions can be used with the HAVING clause but not with the WHERE clause.
Let’s first understand what these clauses are used for in SQL.
The Dispose() and Finalize() are important methods for releasing resources in C#. We use these methods to clean up resources that are no longer needed, such as database connections and files. However, there are significant differences between the “dispose” and “finalize” methods in C#.
IDisposable interface defines the Dispose() method, while the Object class defines the Finalize() method. 
SQL pivot tables are a powerful and convenient way to summarize and analyze large data or records. They allow you to rearrange rows and columns in a dataset, group data together, and perform calculations on the grouped data.
In this article, We will try to learn what pivot tables are and how to use them in SQL.
A Web API & Web service are ways for two machines to communicate with each other over a network. They both allow for information to be exchanged between a client and a server.
An API or web service hosted on a machine can receive requests from other devices(such as smartphones, computers, and tablets) over a network and sends back the requested resources, which can be in various formats like XML, JSON, HTML, images, audio files, etc.
Web APIs and web services look similar but have some key differences, so we need to know them before incorporating them into our project.
