---
title: "What is a Lambda in Coding?"  
description: "What is a Lambda in Coding?"  
author: "Steilla Mitchel"  
published: 2023-08-17  
updated: 2023-08-18  
canonical: https://www.mindstick.com/forum/159553/what-is-a-lambda-in-coding  
category: "c#"  
tags: ["c#", "java", "programming language", "lambda expression"]  
reading_time: 2 minutes  

---

# What is a Lambda in Coding?

What is a [Lambda](https://www.mindstick.com/blog/181/lambda-expression-in-c-sharp) in [Coding](https://www.mindstick.com/articles/12290/teaching-coding-from-the-metal-up-or-from-the-glass-back)?

## Replies

### Reply by Aryan Kumar

A lambda expression (also called an anonymous function) is a short, inline function that can be used where a regular function is expected. Lambda expressions are often used to simplify code and make it more concise.

In Python, lambda expressions are defined using the `lambda` keyword. The syntax for a lambda expression is as follows:

Python

```plaintext
lambda arguments: expression
```

- `arguments`: The arguments to the function.
- `expression`: The expression that is evaluated and returned by the function.

The following is an example of a lambda expression that adds two numbers:

Python

```plaintext
add_two_numbers = lambda x, y: x + y

print(add_two_numbers(10, 20))
```

In this code, the `add_two_numbers` lambda expression takes two numbers as its arguments and returns the sum of the two numbers. The `print()` function prints the result of the `add_two_numbers` lambda expression.

Lambda expressions can be used in a variety of places in Python, including:

- **As the argument to a function:** Lambda expressions can be used as the argument to a function. For example, the following code uses a lambda expression as the argument to the `sorted()` function to sort a list of numbers in ascending order:

Python

```plaintext
numbers = [10, 5, 20]

sorted_numbers = sorted(numbers, key=lambda number: number)

print(sorted_numbers)
```

- **As a value:** Lambda expressions can be used as a value. For example, the following code defines a variable that stores a lambda expression that adds two numbers:

Python

```plaintext
add_two_numbers = lambda x, y: x + y

print(add_two_numbers(10, 20))
```

- **In comprehensions:** Lambda expressions can be used in comprehensions. For example, the following code creates a list of the squares of the numbers from 1 to 10:

Python

```plaintext
squares = [x ** 2 for x in range(1, 11)]

print(squares)
```


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