Boost C++ Libraries: Ticket #1727: Sample code in documentation does not compile, has namespace errors.

Mukkarum.Amin@… — Sat, 29 Mar 2008 03:35:58 GMT

The example code at the very end of this http://www.boost.org/libs/iostreams/doc/classes/bzip2.html page which decompresses data from a file and writes it to standard out is erroneous and does not compile. The boost::iostream namespace is not specified. The code should be as follows, I have verified that it compiles and runs properly:
int main(int argc, char** argv)
{
  using namespace std;
  using namespace boost::iostreams;
  ifstream file("hello.bz2", ios_base::in | ios_base::binary);
  filtering_streambuf<input> in;
  in.push(bzip2_decompressor());
  in.push(file);
  copy(in, cout);
  return 0;
}

Forgot to add includes here is the complete code with includes:

#include <fstream>
#include <iostream>
#include <boost/iostreams/filtering_streambuf.hpp>
#include <boost/iostreams/copy.hpp>
#include <boost/iostreams/filter/bzip2.hpp>
int main(int argc, char** argv)
{
  using namespace std;
  using namespace boost::iostreams;
  ifstream file("hello.bz2", ios_base::in | ios_base::binary);
  filtering_streambuf<input> in;
  in.push(bzip2_decompressor());
  in.push(file);
  copy(in, cout);
  return 0;
}

owner, component changed

Daniel James — Thu, 10 Apr 2008 21:11:27 GMT

owner changed from Matias Capeletto to Jonathan Turkanis
component Documentation → iostreams

status changed; resolution set

Jonathan Turkanis — Sun, 25 May 2008 23:49:02 GMT

status new → closed
resolution → fixed

(In [45755]) fixed #1727

Jonathan Turkanis — Sun, 25 May 2008 23:51:35 GMT

Fixed in [45755]. I left in the namespace qualification in the call to copy, because it is good practice to prevent argument-dependent lookup from find another overload of copy (e.g., std::copy from <algorithm>)