LambdaSyntax.cs

namespace AnonymousFunctions;

public static class LambdaSyntax
{
    public static int GetIndexOfFirstNonEmptyBin(int[] bins)
    {
        return Array.FindIndex(
            bins,
            value => value > 0
        );
    }

    public static void Variations()
    {
        Predicate<int> p1 = value => value > 0;
        Predicate<int> p2 = (value) => value > 0;
        Predicate<int> p3 = (int value) => value > 0;
        Predicate<int> p4 = value => { return value > 0; };
        Predicate<int> p5 = (value) => { return value > 0; };
        Predicate<int> p6 = (int value) => { return value > 0; };
        Predicate<int> p7 = bool (value) => value > 0;
        Predicate<int> p8 = bool (int value) => value > 0;
        Predicate<int> p9 = bool (value) => { return value > 0; };
        Predicate<int> pA = bool (int value) => { return value > 0; };

        foreach (Predicate<int> p in new[] { p1, p2, p3, p4, p5, p6, p7, p8, p9, pA })
        {
            Console.WriteLine(p(10));
            Console.WriteLine(p(-10));
            Console.WriteLine();
        }
    }

    public static void ZeroArgumentForm()
    {
        Func<bool> isAfternoon = () => DateTime.Now.Hour >= 12;

        Console.WriteLine(isAfternoon());
    }
}