C++ boost::unordered_set::emplace
Description:-
boost::unordered_set::emplace
function is used to inserts a new element in the unordered_set
if its value is unique. This new element is constructed in
place using args as the arguments for the element's
constructor.
Syntax:-
setname.emplace(arg);
parameters:-
Arguments passed to the constructor of the a new element to be inserted
sample code:-
#include<iostream>
#include<string>
#include<unordered_set>
int main ()
{
std::unordered_set<std::string> cset; // Declaration of the unordered_set
cset.emplace("sachin"); // inserting the element into set
cset.emplace("rahul"); // inserting the element into set
cset.emplace("dhawan"); // inserting the element into set
std::cout<< "cset contains:";
for(const std::string& x: cset) std::cout << " " <<x;
std::cout<< std::endl;
return 0;
}
output : cset contains : dhawan sachin rahul
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