 |
| var in c# |
C# is a strongly-typed language, meaning that every variable must have a defined type before it can be used. In C# 3.0, a new feature called "var" was introduced to simplify the declaration of variables. The var keyword allows you to declare a variable without specifying its type explicitly. In this blog, we'll explore how to use var to create variables in C# and the benefits it offers.
What is var in C#?
The var keyword is a contextual keyword in C#. It is used to declare variables without explicitly specifying their type. Instead, the type of the variable is inferred from the value assigned to it. Here's an example:
In this example, the type of i is inferred to be int because it is assigned a value of 10, which is an integer literal.
How to use var in C# :
To use var in C#, you simply replace the explicit type declaration with the var keyword. For example:
In this example, s is inferred to be a string, d is inferred to be a double, and b is inferred to be a boolean.
You can also use var with complex types, such as anonymous types and collections. Here's an example:
In this example, person is an anonymous type with two properties, Name and Age. list is a list of integers.
Benefits of using var in C# :
Using var to declare variables in C# offers several benefits:
1. It simplifies variable declarations. With var, you don't have to specify the type explicitly, which can make your code shorter and easier to read.
2. It makes your code more flexible. With var, you can declare a variable without knowing its type in advance, which can be useful when working with dynamic data or when you need to refactor your code.
3. It improves code readability. Using var can make your code more readable by eliminating unnecessary type declarations.
4. It reduces the chance of errors. With var, you don't have to worry about specifying the wrong type for a variable, which can reduce the chance of errors.
5. It makes your code more concise. By reducing the amount of code required to declare a variable, var can make your code more concise and easier to maintain.
Var is a useful feature in C# that simplifies variable declarations and makes your code more flexible, readable, and concise. With var, you can declare variables without specifying their type explicitly, which can save you time and reduce the chance of errors. Overall, var is a powerful tool that every C# developer should be familiar with.
Related Articles :
1. Count Specific elements in array in c#
3. Remove duplicates from C# array
4. Sort object array by specific property in c#
6. How to search an element in c# array
7. How to rclone commands in c#
8. How to get comma separated string from array
