iterator find( const Key& key ); | (1) | |
const_iterator find( const Key& key ) const; | (2) |
1,2) Finds an element with key equivalent to
key. Parameters
| key | - | key value of the element to search for |
Return value
Iterator to an element with key equivalent to key. If no such element is found, past-the-end (see end()) iterator is returned.
Complexity
Constant on average, worst case linear in the size of the container.
Example
#include <iostream>
#include <unordered_set>
int main()
{
std::unordered_set<int> example = {1, 2, 3, 4};
auto search = example.find(2);
if(search != example.end()) {
std::cout << "Found " << (*search) << '\n';
}
else {
std::cout << "Not found\n";
}
}Output:
Found 2
See also
| returns the number of elements matching specific key (public member function) | |
| returns range of elements matching a specific key (public member function) |
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