std::hive<T,Allocator>::clear
From cppreference.net
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.
Complexity
Linear in the size of the container, i.e., the number of elements.
Example
Run this code
#include <iostream>
#include <string_view>
#include <hive>
void print_info(std::string_view rem, const std::hive<int>& v)
{
std::cout << rem << "{ ";
for (const auto& value : v)
std::cout << value << ' ';
std::cout << "}\n";
std::cout << "Size=" << v.size() << ", Capacity=" << v.capacity() << '\n';
}
int main()
{
std::hive<int> container{1, 2, 3};
print_info("Before clear: ", container);
container.clear();
print_info("After clear: ", container);
}
Output:
Before clear: { 1 2 3 }
Size=3, Capacity=76
After clear: { }
Size=0, Capacity=76
See also
| erases elements (public member function) |