typedef CoderPipe2<MD5SumCoder, HuffmanCoder> Coder;

int main()
{
        string str = "Hello World";

        // your code ...
        encoding_ofstream<Coder> out("foo");
        out << str << "\n";
        out.close();
        if (out.fail()) std::cout << "error writing foo" << "\n";

        // your friend's code ...
        autodecoding_ifstream in("foo");
        // autodecoding_ifstream = decoding_istream<AutoDecoder>
        in >> str;
        in.close();
        if (in.fail()) std::cout << "decoding error, foo corrupted" << "\n";
        std::cout << "decoded string: " << str << "\n";

        return 0;
}

This example shows how easy it is to add compression to existing applications:

You include the header ``LEDA/compression.h'', which makes all classes in the compression module available. Then you simply replace every occurrence of ofstream by encoding_ofstream <Coder > and every occurence of ifstream by autodecoding_ifstream.