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// swap maps
#include <iostream>
#include <map>
int main ()
{
std::map<char,int> foo,bar;
foo['x']=100;
foo['y']=200;
bar['a']=11;
bar['b']=22;
bar['c']=33;
foo.swap(bar);
std::cout << "foo contains:\n";
for (std::map<char,int>::iterator it=foo.begin(); it!=foo.end(); ++it)
std::cout << it->first << " => " << it->second << '\n';
std::cout << "bar contains:\n";
for (std::map<char,int>::iterator it=bar.begin(); it!=bar.end(); ++it)
std::cout << it->first << " => " << it->second << '\n';
return 0;
}
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