Description : This function is used to insert elements with a particular key in the unordered_map container, increases the container size by 1, and does not insert any duplicate entries. These are the following variants of this function. All of them are overloaded functions.
Example :
// Demonstrates insert()
#include <iostream>
#include <unordered_map>
int main(){
//declares an empty map. O(1)
std::unordered_map<char, int> mymap;
// inserting in to unordered_map with O(1) time on average
mymap.insert({'A', 1});
mymap.insert({'b', 2});
mymap.insert({'c', 3});
//print unordered_map elements
for (auto it = mymap.begin(); it != mymap.end(); ++it){
std::cout << it->first << " = "<< it->second << '\n';
}
return 0;
}