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							- #pragma once
 
- #include <ostream>
 
- #include <streambuf>
 
- // from https://stackoverflow.com/a/8244052
 
- class NullStreambuf : public std::streambuf {
 
-   char dummyBuffer[64];
 
- protected:
 
-   virtual int overflow(int c) override final;
 
- };
 
- class NullOStream final : private NullStreambuf, public std::ostream {
 
- public:
 
-   NullOStream() : std::ostream(this) {}
 
-   NullStreambuf *rdbuf() { return this; }
 
-   virtual void avoidOutOfLineVirtualCompilerWarning();
 
- };
 
 
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