functional-workshop

functional programming principles applied in C#

---

Project maintained by B1tF8er Hosted on GitHub Pages — Theme by mattgraham

Arity Of Functions

In logic, mathematics, and computer science, the arity of a function or operation is the number of arguments or operands that the function takes,

• Nullary, takes no arguments
• Unary, takes one argument
• Binary, takes two arguments
• Ternary, takes three arguments
• n-ary, takes n arguments

using System.Linq;
using static System.Console;

internal class TestArity
{
    internal static void Run()
    {
        WriteLine(Nullary());
        WriteLine(Unary(1));
        WriteLine(Binary(1, 2));
        WriteLine(Ternary(1, 2, 3));
        WriteLine(N_Ary(1, 2, 3, 4));
        WriteLine(N_Ary(Enumerable.Range(1, 16).ToArray()));
        WriteLine(N_Ary(Enumerable.Range(1, 100).ToArray()));
    }

    private static string Nullary()
        => "No arguments";

    private static string Unary(int one)
        => $"One argument: {one}";

    private static string Binary(int one, int two)
        => $"Two arguments: {one} and {two}";

    private static string Ternary(int one, int two, int three)
        => $"Three arguments: {one}, {two} and {three}";

    private static string N_Ary(params int[] arguments)
        => $"N arguments: {arguments.Length}";
}