From 053ecdcdd4315c98f3b06788c39833323896d0c3 Mon Sep 17 00:00:00 2001
From: manga_osyo <manga.osyo@gmail.com>
Date: Tue, 15 May 2012 17:22:21 +0900
Subject: [PATCH] =?UTF-8?q?example=20=E3=81=AB=20FizzBuzz=20=E3=82=92?=
 =?UTF-8?q?=E8=BF=BD=E5=8A=A0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 example/fizzbuzz/main.cpp | 99 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 example/fizzbuzz/main.cpp

diff --git a/example/fizzbuzz/main.cpp b/example/fizzbuzz/main.cpp
new file mode 100644
index 00000000..e287d27a
--- /dev/null
+++ b/example/fizzbuzz/main.cpp
@@ -0,0 +1,99 @@
+//
+// Sprout C++ Library
+//
+// Copyright (c) 2012
+// bolero-MURAKAMI : http://d.hatena.ne.jp/boleros/
+// osyo-manga : http://d.hatena.ne.jp/osyo-manga/
+// 
+// Readme:
+// https://github.com/osyo-manga/cpp-half/blob/master/README
+//
+// License:
+// Boost Software License - Version 1.0
+// <http://www.boost.org/LICENSE_1_0.txt>
+//
+#include <sprout/algorithm/transform.hpp>
+#include <sprout/array.hpp>
+#include <sprout/string.hpp>
+#include <sprout/numeric/iota.hpp>
+#include <sprout/pit.hpp>
+#include <iostream>
+
+
+struct fizzbuzz{
+	typedef sprout::string<12> result_type;
+
+	constexpr result_type
+	operator ()(int n) const{
+		return n % 15 == 0 ? sprout::to_string("FizzBuzz")
+			 : n %  3 == 0 ? sprout::to_string("Fizz")
+			 : n %  5 == 0 ? sprout::to_string("Buzz")
+			 : sprout::to_string(n);
+	}
+};
+
+
+int
+main(){
+	typedef fizzbuzz::result_type string;
+
+	//
+	// Test
+	//
+	static_assert(fizzbuzz()( 1) == "1", "");
+	static_assert(fizzbuzz()( 2) == "2", "");
+	static_assert(fizzbuzz()( 3) == "Fizz", "");
+	static_assert(fizzbuzz()( 5) == "Buzz", "");
+	static_assert(fizzbuzz()(15) == "FizzBuzz", "");
+	
+	//
+	// Sequence [1..15]
+	//
+	constexpr auto source = sprout::iota(
+		sprout::pit<sprout::array<int, 15> >(),
+		1
+	);
+
+	//
+	// Transform to FizzBuzz
+	//
+	constexpr auto result = sprout::transform(
+		sprout::begin(source),
+		sprout::end(source),
+		sprout::pit<sprout::array<string, 15> >(),
+		fizzbuzz()
+	);
+	
+	//
+	// Check result
+	//
+	constexpr auto fizzbuzz_result = sprout::make_array<string>(
+		sprout::to_string("1"),
+		sprout::to_string("2"),
+		sprout::to_string("Fizz"),
+		sprout::to_string("4"),
+		sprout::to_string("Buzz"),
+		sprout::to_string("Fizz"),
+		sprout::to_string("7"),
+		sprout::to_string("8"),
+		sprout::to_string("Fizz"),
+		sprout::to_string("Buzz"),
+		sprout::to_string("11"),
+		sprout::to_string("Fizz"),
+		sprout::to_string("13"),
+		sprout::to_string("14"),
+		sprout::to_string("FizzBuzz")
+	);
+	// Equal result sequence
+	static_assert(result == fizzbuzz_result, "");
+
+	//
+	// Output
+	//
+	for(auto&& str : result){
+		std::cout << str << ", ";
+	}
+	std::cout << std::endl;
+
+	return 0;
+}