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// unordered_set::key_eq
#include <iostream>
#include <string>
#include <unordered_set>
int main ()
{
std::unordered_set<std::string> myset;
bool case_insensitive = myset.key_eq()("checking","CHECKING");
std::cout << "myset.key_eq() is ";
std::cout << ( case_insensitive ? "case insensitive" : "case sensitive" );
std::cout << std::endl;
return 0;
}
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