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// list::merge
#include <iostream>
#include <list>
// compare only integral part:
bool mycomparison (double first, double second)
{ return ( int(first)<int(second) ); }
int main ()
{
std::list<double> first, second;
first.push_back (3.1);
first.push_back (2.2);
first.push_back (2.9);
second.push_back (3.7);
second.push_back (7.1);
second.push_back (1.4);
first.sort();
second.sort();
first.merge(second);
// (second is now empty)
second.push_back (2.1);
first.merge(second,mycomparison);
std::cout << "first contains:";
for (std::list<double>::iterator it=first.begin(); it!=first.end(); ++it)
std::cout << ' ' << *it;
std::cout << '\n';
return 0;
}
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