\u5148\u306bFunc<T,U>\u306e\u62e1\u5f35\u30e1\u30bd\u30c3\u30c9\u306e\u5b9a\u7fa9\u3068\u5b9f\u88c5\u3002\u3053\u306e\u4e0b\u306e\u5229\u7528\u4f8b\u304b\u3089\u898b\u305f\u307b\u3046\u304c\u308f\u304b\u308a\u3084\u3059\u3044\u304b\u3082\u3002<\/p>\n
public static class FuncUtils
\n{
\n\u00a0\u00a0\u00a0 public static Func<TSource, TResult> Compose<TSource, TResult>(
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 this Func<TSource, int> funcSelector,
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 params Func<TSource, TResult>[] functionCandidates)
\n\u00a0\u00a0\u00a0 {
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Expression<Func<TSource, TResult>> ret = t0
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 => functionCandidates[funcSelector(t0)](t0);\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 return ret.Compile();
\n\u00a0\u00a0\u00a0 }
\n}<\/p><\/blockquote>\n\u3068\u304b\u3084\u3063\u3066\u304a\u3044\u3066\u3001<\/p>\n
Func<int, string> fNum = n => n.ToString();
\nFunc<int, string> fFizz = n => “Fizz”;
\nFunc<int, string> fBuzz = n => “Buzz”;
\nFunc<int, string> fFizzBuzz = n => “FizzBuzz”;<\/p>\nFunc<int, int> selector = n
\n\u00a0\u00a0\u00a0 => (n % 15 == 0) ? 3
\n\u00a0\u00a0\u00a0 : (n % 5 == 0) ? 2
\n\u00a0\u00a0\u00a0 : (n % 3 == 0) ? 1
\n\u00a0\u00a0\u00a0 : 0;<\/p>\nvar fizzbuzz = selector.Compose(fNum, fFizz, fBuzz, fFizzBuzz);<\/p>\n
Enumerable.Range(1, 100).ToList().ForEach(n
\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 => Console.WriteLine(fizzbuzz(n)));<\/p><\/blockquote>\n\u3046\u306fw \u30ad\u30bf\u30b3\u30ec\uff57ww<\/p>\n
\u3042\u3001Fizz Buzz \u554f\u984c\u3092\u3084\u3084\u3053\u3057\u304f\u89e3\u3053\u3046\u3068\u601d\u3063\u305f\u3060\u3051\u3067\u3059\u3002<\/p>\n