Functional composition

Functional composition in C# refers to the practice of combining multiple functions to create a new function. The result of one function becomes the input for another function, allowing developers to chain and compose functions to perform more complex operations in a concise and declarative manner. This technique is a core concept in functional programming and enables code reuse and modularity.

There are several ways to achieve functional composition in C#, including using Lambda expressions, LINQ, and higher-order functions. Let’s explore some examples of functional composition in C#.

Using Lambda expressions

Func<int, int> addOne = x => x + 1;Func<int, int> doubleValue = x => x * 2;
Func<int, int> composedFunction = x => doubleValue(addOne(x));
int result = composedFunction(5); // result = doubleValue(addOne(5)) = doubleValue(6) = 12

In this example, we define two simple functions, addOne and doubleValue. Then,...