// PROJECT-EXAMPLE
System.Func<int, int> twice = value => value * 2;
System.Console.WriteLine(twice(4));

value => expression / (left, right) => { ... }

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;

public static class Program
{
    public static async Task Main(string[] args)
    {
        Func<int, int> square = value => value * value;
        Console.WriteLine(square(4));
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;

public static class Program
{
    public static async Task Main(string[] args)
    {
        int offset = 3;
        Func<int, int> adjusted = value => { int result = value + offset; return result; };
        Console.WriteLine(adjusted(5));
    }
}