std::basic_string_view<CharT,Traits>::max_size

Since C++17

The largest possible number of char-like objects that can be referred to by a basic_string_view.

# Declarations

constexpr size_type max_size() const noexcept;

(since C++17)

# Return value

Maximum number of characters.

# Example

#include <cstdint>
#include <iostream>
#include <limits>
#include <string_view>
 
int main()
{
    std::cout << std::numeric_limits<std::int64_t>::max()
              << " <- numeric_limits<int64_t>::max()\n"
              << std::string_view{}.max_size()
              << " <- string_view::max_size()\n"
              << std::basic_string_view<char>{}.max_size()
              << " <- basic_string_view<char>::max_size()\n"
              << std::basic_string_view<char16_t>{}.max_size()
              << " <- basic_string_view<char16_t>::max_size()\n"
              << std::wstring_view{}.max_size()
              << " <- wstring_view::max_size()\n"
              << std::basic_string_view<char32_t>{}.max_size()
              << " <- basic_string_view<char32_t>::max_size()\n";
}

# See also