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std::basic_...ng::pop_back(3) C++ Standard Libarystd::basic_...ng::pop_back(3) NAME std::basic_string::pop_back - std::basic_string::pop_back Synopsis void pop_back(); (constexpr since C++20) Removes the last character from the string. Equivalent to erase(end() - 1). The behavior is undefined if the string is empty. Parameters (none) Return value (none) Complexity Constant. Exceptions Throws nothing. Notes In libstdc++, pop_back() is not available in C++98 mode. Example // Run this code #include <cassert> #include <iomanip> #include <iostream> #include <string> int main() { std::string str("Short string!"); std::cout << "before=" << std::quoted(str) << '\n'; assert(str.size() == 13); str.pop_back(); std::cout << " after=" << std::quoted(str) << '\n'; assert(str.size() == 12); str.clear(); // str.pop_back(); // undefined behavior } Output: before="Short string!" after="Short string" Defect reports The following behavior-changing defect reports were applied retroac- tively to previously published C++ standards. DR Applied to Behavior as published Correct behavior LWG 534 C++98 std::basic_string did not have the member added function pop_back() See also push_back appends a character to the end (public member function) erase removes characters (public member function) http://cppreference.com 2024.06.10 std::basic_...ng::pop_back(3)
NAME | Synopsis | Parameters | Return value | Complexity | Exceptions | Notes | Example | Output: | See also
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