# deduction guides for `std::ranges::lazy_split_view`

From cppreference.com
< cpp‎ | ranges‎ | lazy split view

template< class R, class P > lazy_split_view( R&&, P&& ) -> lazy_split_view< views::all_t <R>, views::all_t <P>>; | (1) | (since C++20)
template< ranges::input_range R > lazy_split_view( R&&, ranges::range_value_t <R> ) -> lazy_split_view< views::all_t <R>, ranges::single_view < ranges::range_value_t <R>>>; | (2) | (since C++20)

These deduction guides are provided for lazy_split_view to allow deduction from a range and a delimiter.

1) The delimiter is a range of elements.
2) The delimiter is a single element.

### Example

Run this code

    #include <ranges>
    #include <string_view>
    #include <type_traits>
    using std::operator""sv;

    int main()
    {
        std::ranges::lazy_split_view w1{"a::b::c"sv, "::"sv};
        // type of w1 is lazy_split_view<string_view, string_view>:
        static_assert(std::is_same_v<
            decltype(w1),
            std::ranges::lazy_split_view<
                std::basic_string_view<char, std::char_traits<char>>,
                std::basic_string_view<char, std::char_traits<char>>>>);

        std::ranges::lazy_split_view w2{"x,y,z"sv, ','};
        // type of w2 is lazy_split_view<string_view, single_view<char>>:
        static_assert(std::is_same_v<
            decltype(w2),
            std::ranges::lazy_split_view<
                std::basic_string_view<char, std::char_traits<char>>,
                std::ranges::single_view<char>>>);
    }

Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/ranges/lazy_split_view/deduction_guides&oldid=156456"