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std::ranges::split_view<V,Pattern>::base

constexpr V base() const& requires std::copy_constructible<V>;
 (1) (since C++20) 
constexpr V base() &&;
 (2) (since C++20)

Returns a copy of the underlying view base_.

1) Copy constructs the result from the underlying view.
2) Move constructs the result from the underlying view.

Parameters

(none).

Return value

1) A copy of the underlying view.
2) A view move-constructed from the underlying view.

Example

#include <iostream>
#include <iomanip>
#include <ranges>
#include <string_view>
 
int main()
{
    constexpr std::string_view keywords{ "this throw true try typedef typeid" };
    std::ranges::split_view split_view{ keywords, ' ' };
    std::cout << "base() = " << std::quoted( split_view.base() ) << "\n"
                 "substrings: ";
    for (auto split: split_view)
        std::cout << std::quoted( std::string_view{ split } ) << ' ';
}

Output:

base() = "this throw true try typedef typeid"
substrings: "this" "throw" "true" "try" "typedef" "typeid"

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR Applied to Behavior as published Correct behavior
LWG 3590 C++20 the const& overload additionally required validity of copy-assignment constraints relaxed

See also

(C++20)
 returns a copy of the underlying (adapted) view
(public member function of std::ranges::lazy_split_view<V,Pattern>)

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