std::unordered_set<Key,Hash,KeyEqual,Allocator>::size
From cppreference.com
< cpp | container | unordered set
size_type size() const noexcept; |
(since C++11) (constexpr since C++26) |
|
Returns the number of elements in the container.
Contents |
[edit] Return value
std::distance(begin(), end())
[edit] Complexity
Constant.
[edit] Example
Run this code
#include <cassert> #include <unordered_set> int main() {