deduction guides for std::ranges::lazy_split_view

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C++
Ranges library
Range adaptors
std::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>>>);
}
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