std::basic_string<CharT,Traits,Allocator>::empty

`bool empty() const;`		( C++11)
`bool empty() const noexcept;`		( C++11) ( C++20)
`[[nodiscard]] constexpr bool empty() const noexcept;`		( C++20)

, , .. begin() == end().

()

true, , false

.

#include <iostream>
#include <string>

int main()
{
    std::string s;
    std::boolalpha(std::cout);
    std::cout << "s.empty():" << s.empty() << "\t s:'" << s << "'\n";

    s = "Exemplar";
    std::cout << "s.empty():" << s.empty() << "\t s:'" << s << "'\n";

    s = "";
    std::cout << "s.empty():" << s.empty() << "\t s:'" << s << "'\n";
}

:

s.empty():true	 s:''
s.empty():false	 s:'Exemplar'
s.empty():true	 s:''

sizelength	(public -) []
max_size	(public -) []
capacity	, (public -) []
sizessize (C++17)(C++20)	( ) []
empty (C++17)	, ( ) []
empty (C++17)	, (public - `std::basic_string_view<CharT,Traits>`) []







(C++20)

(C++20)
(C++11)





(C++20)


/

(C++11)
(C++11)
(C++11)
(C++17)

cppreference.com

std::basic_string<CharT,Traits,Allocator>::empty