Returns true if the type identified by *this is considered to go before the type identified by rhs, and false otherwise.
Example
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// ordering types
#include <iostream> // std::cout
#include <typeinfo> // operator typeid
int main() {
if ( typeid(int).before(typeid(char)) )
std::cout << "int goes before char in this implementation.\n";
else
std::cout << "char goes before int in this implementation.\n";
return 0;
}