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std::basic_...w::max_size(3)   C++ Standard Libary  std::basic_...w::max_size(3)

NAME
     std::basic_string_view::max_size - std::basic_string_view::max_size

Synopsis
	constexpr size_type max_size() const noexcept;	(since C++17)

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

Parameters
	(none)

Return value
	Maximum number of characters.

Complexity
	Constant.

Example
     // Run this code

      #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";
      }

Possible output:
      9223372036854775807 <- numeric_limits<int64_t>::max()
      4611686018427387899 <- string_view::max_size()
      4611686018427387899 <- basic_string_view<char>::max_size()
      2305843009213693949 <- basic_string_view<char16_t>::max_size()
      1152921504606846974 <- wstring_view::max_size()
      1152921504606846974 <- basic_string_view<char32_t>::max_size()

See also
	size	 returns the number of characters
	length	 (public member function)
	empty	 checks whether the view is empty
		 (public member function)
		 returns the maximum number of characters
	max_size (public member function of std::basic_string<CharT,Traits,Allo-
     cator>)

http://cppreference.com 	   2024.06.10	    std::basic_...w::max_size(3)
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