在C ++或库中有一个空的std :: ostream实现？ [英] Is there a null std::ostream implementation in C++ or libraries?

问题描述

我在寻找一个 / dev / null 的 std :: ostream 实现。它只会忽略流向它的任何东西。这样的事情存在于标准库还是Boost？

I'm looking for a std::ostream implementation that acts like /dev/null. It would just ignore anything that is streamed to it. Does such a thing exist in the standard libraries or Boost? Or do I have to roll my own?

推荐答案

如果你有boost，那么就有一个null ostream& istream实现在boost / iostreams / device / null.hpp中可用。其要点：

If you have boost, then there's a null ostream & istream implementation available in boost/iostreams/device/null.hpp . The gist of it:

#include "boost/iostreams/stream.hpp"
#include "boost/iostreams/device/null.hpp"
...
boost::iostreams::stream< boost::iostreams::null_sink > nullOstream( ( boost::iostreams::null_sink() ) );
...

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