What are higher-order functions in C#?

What are higher-order functions in C#?

Higher-order functions are functions that can take other functions as parameters or return them as results.

Can you give me an example of a higher-order function in C#?

Sure! A common example is the Func<T, TResult> delegate, which can represent a method that takes a parameter of type T and returns a TResult.

How do I use a higher-order function to filter a list?

You can use the Where method from LINQ, which takes a predicate function to filter elements based on a condition.

Can you show me a code snippet for that?

Absolutely! Here's a simple example:

var numbers = new List<int> { 1, 2, 3, 4, 5 };
var evenNumbers = numbers.Where(n => n % 2 == 0);