std::list<T,Allocator>::push_back
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list::push_back
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void push_back( const T& value );
(1)
(constexpr since C++26)
void push_back( T&& value );
(2)
(since C++11) (constexpr since C++26)
Appends a copy of value to the end of the container.
No iterators or references are invalidated.
[edit] Parameters
value
-
the value of the element to append
Type requirements
-If the following condition is met, the behavior is undefined:
(since C++11)[edit] Complexity
Constant.
[edit] Exceptions
If an exception is thrown (which can be due to Allocator::allocate() or element copy/move constructor/assignment), this function has no effect (strong exception guarantee).
[edit] Example
Run this code
#include <iomanip> #include <iostream> #include <string> #include <list> int main() { std::list <std::string > letters; letters.push_back("abc"); std::string s{"def"}; letters.push_back(std::move(s)); std::cout << "std::list letters holds: "; for (auto&& e : letters) std::cout << std::quoted (e) << ' '; std::cout << "\nMoved-from string s holds: " << std::quoted (s) << '\n'; }
Possible output:
std::list letters holds: "abc" "def" Moved-from string s holds: ""