型特性を扱うヘッダ
(ugilib/awesome_external_lib/rainbou-kpr/traits.hpp)

• View this file on GitHub
• Last update: 2024-05-18 17:31:22+09:00
• Include: #include "ugilib/awesome_external_lib/rainbou-kpr/traits.hpp"
• Link: https://github.com/rainbou-kpr/libraryからのコピーです

Required by

• tests/awesome_external_lib/rolling_hash.notest.cpp
• ローリングハッシュを扱うヘッダ (ugilib/awesome_external_lib/rainbou-kpr/rolling-hash.hpp)
• 列の[l, r)が回文かどうかを判定する (ugilib/string/palindrome.hpp)

Verified with

• tests/string/palindrome.test.cpp

Code

#pragma once

/**
 * @file traits.hpp
 * @brief 型特性を扱うヘッダ
 * @note https://github.com/rainbou-kpr/libraryからのコピーです
 */

#include <iterator>
#include <type_traits>
#include <utility>

namespace ugilib::rainbou_kpr {
    namespace detail {
    using std::begin, std::end;

    template <class T, class = void>
    struct is_range_impl : std::false_type {};
    template <class T>
    struct is_range_impl<T, std::void_t<decltype(begin(std::declval<T&>()), end(std::declval<T&>()))>> : std::true_type {};
    }  // namespace detail

    template <class T>
    struct is_range : detail::is_range_impl<T>::type {};
    template <class T>
    inline constexpr bool is_range_v = is_range<T>::value;
}  // namespace ugilib::rainbou_kpr

#line 2 "ugilib/awesome_external_lib/rainbou-kpr/traits.hpp"

/**
 * @file traits.hpp
 * @brief 型特性を扱うヘッダ
 * @note https://github.com/rainbou-kpr/libraryからのコピーです
 */

#include <iterator>
#include <type_traits>
#include <utility>

namespace ugilib::rainbou_kpr {
    namespace detail {
    using std::begin, std::end;

    template <class T, class = void>
    struct is_range_impl : std::false_type {};
    template <class T>
    struct is_range_impl<T, std::void_t<decltype(begin(std::declval<T&>()), end(std::declval<T&>()))>> : std::true_type {};
    }  // namespace detail

    template <class T>
    struct is_range : detail::is_range_impl<T>::type {};
    template <class T>
    inline constexpr bool is_range_v = is_range<T>::value;
}  // namespace ugilib::rainbou_kpr

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