deduction guides for std::ranges::split_view

deduction guides for std::ranges::split_view - cppreference.com

From cppreference.com

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

These deduction guides are provided for 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

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

int main() {
    std::ranges::split_view w1{"a::b::c"sv, "::"sv};
    static_assert(std::is_same_v<
        decltype(w1),
        std::ranges::split_view<std::string_view, std::string_view>>);

    std::ranges::split_view w2{"x,y,z"sv, ','};
    static_assert(std::is_same_v<
        decltype(w2),
        std::ranges::split_view<std::string_view, std::ranges::single_view<char>>>);
}