NAME¶

std::basic_string_view::back - std::basic_string_view::back

Synopsis¶

constexpr const_reference back() const; (since C++17)

Returns reference to the last character in the view. The behavior is undefined if
empty() == true.

Parameters¶

(none)

Return value¶

Reference to the last character, equivalent to operator[](size() - 1).

Complexity¶

Constant.

Example¶

// Run this code

#include <string_view>
#include <iostream>

int main() {
for (std::string_view str{"ABCDEF"}; !str.empty(); str.remove_suffix(1))
std::cout << str.back() << ' ' << str << '\n';
}

Output:¶

F ABCDEF
E ABCDE
D ABCD
C ABC
B AB
A A

See also¶

front accesses the first character
(C++17) (public member function)
empty checks whether the view is empty
(C++17) (public member function)
back accesses the last character
(C++11) (public member function of std::basic_string<CharT,Traits,Allocator>)