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// unordered_map::size
#include <iostream>
#include <string>
#include <unordered_map>
int main ()
{
std::unordered_map<std::string,double> mymap = {
{"milk",2.30},
{"potatoes",1.90},
{"eggs",0.40}
};
std::cout << "mymap.size() is " << mymap.size() << std::endl;
return 0;
}
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