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std::{{{1}}}::find

من cppreference.com
iterator find( const Key& key );
(1)
const_iterator find( const Key& key ) const;
(2)
1,2) Finds an element with key equivalent to ‎key‎.


محتويات

[تعديل] Parameters

key - key value of the element to search for


[تعديل] 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.

[تعديل] Complexity

Constant on average, worst case linear in the size of the container.

[تعديل] Example

#include <iostream>
#include <set>
 
int main()
{  
    std::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";
    }
}

الخرج:

Found 2

[تعديل] See also

قالب:dsc mem funقالب:dsc mem fun