NAME¶

deductionguidesforstd::ranges::lazy_split_view - deductionguidesforstd::ranges::lazy_split_view

Synopsis¶

template< class R, class P >

lazy_split_view( R&&, P&& ) (1) (since C++20)

-> lazy_split_view<views::all_t<R>, views::all_t<P>>;
template< ranges::input_range R >

lazy_split_view( R&&, ranges::range_value_t<R> )
-> lazy_split_view<views::all_t<R>, (2) (since C++20)

ranges::single_view<ranges::range_value_t<R>>>;

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>>>);
}