std::inplace_vector<T,N>::clear - cppreference.com (original) (raw)
| constexpr void clear() noexcept; | | (since C++26) | | -------------------------------- | | ------------- |
Erases all elements from the container. After this call, size() returns zero.
Invalidates any references, pointers, and iterators referring to contained elements. Any past-the-end iterators are also invalidated.
[edit] Complexity
Linear in the size of the container, i.e., the number of elements.
[edit] Example
#include #include #include void print_info(std::string_view rem, const std::inplace_vector<int, 3>& v) { std::cout << rem << "{ "; for (const auto& value : v) std::cout << value << ' '; std::cout << "}\n"; std::cout << "Size=" << v.size() << '\n'; } int main() { std::inplace_vector<int, 3> container{1, 2, 3}; print_info("Before clear: ", container); container.clear(); print_info("After clear: ", container); }
Output:
Before clear: { 1 2 3 } Size=3 After clear: { } Size=0