Handling exceptions in FP

In FP, it is common to handle errors and exceptions using monads, such as the Option or Either monad. These monads allow for more declarative and composable error handling, as opposed to imperative try-catch blocks.

You will need to add the LanguageExt.Core NuGet package and add the following using statements:

using LanguageExt;using static LanguageExt.Prelude;

Here is an example of using the Option monad in C# to handle exceptions:

internal class Program {
    static void Main(string[] args) 
    {
        Console.WriteLine("Hello, and welcome to the functional programming world!"); 
        ExceptionHandlingUsingMonadSome(); 
    }
    public static bool IsValidInteger(string input) 
    {
        return input is { ...