utility.hpp

Go to the documentation of this file.

/* SPDX-FileCopyrightText: Copyright (c) 2024-2025 Oğuz Toraman <oguz.toraman@tutanota.com> */
/* SPDX-License-Identifier: LGPL-3.0-only */
 
#ifndef UTILITY_HPP
#define UTILITY_HPP
 
#include <concepts>
#include <ranges>
#include <string>
 
namespace utility {
 
template <typename ContainerType>
concept range_container = std::ranges::range<ContainerType>
                       && requires(ContainerType c) {
                              typename ContainerType::value_type;
                          };
 
template <typename ValueType, typename StringConverterType>
concept string_converter = std::same_as<
    std::invoke_result_t<StringConverterType, ValueType>,
    std::string>;
 
template <range_container ContainerType, typename StringConverterType>
requires string_converter<
    typename ContainerType::value_type,
    StringConverterType>
[[nodiscard]] inline std::string to_string(
    const ContainerType& container,
    const std::string&   value_separator,
    StringConverterType  string_converter
)
{
    return container | std::views::transform(string_converter)
         | std::views::join_with(value_separator)
         | std::ranges::to<std::string>();
}
 
} /* namespace utility */
 
#endif /* UTILITY_HPP */