matarillo

let rec fact n =
    if n = 0I then 1I
    else n * fact (n-1I)

let comb n r = 
    let a = fact n
    let b = fact r
    let c = fact (n-r)
    (a / (b*c))

matarillo

using System;
using System.Runtime.InteropServices;

class Program
{
    static void Main()
    {
        Write(false);
        Write(true);

matarillo

using System;
using System.IO;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        // 1. Trial.Ofの型引数を明示することで、実引数であるメソッド参照の型が決まる
        var result1 = new[] { "aaa", "bbb", "ccc" }