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