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// swapping ostringstream objects
#include <string> // std::string
#include <iostream> // std::cout
#include <sstream> // std::ostringstream
int main () {
std::ostringstream foo;
std::ostringstream bar;
foo << 100;
bar << 200;
swap(foo,bar); // unqualified (uses argument-dependent lookup)
std::cout << "foo: " << foo.str() << '\n';
std::cout << "bar: " << bar.str() << '\n';
return 0;
}
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