zypp::NullDeleter Struct Reference

shared_ptr custom deleter doing nothing. More...

#include <PtrTypes.h>

Public Member Functions
void	operator() (const void *const ) const

Detailed Description

shared_ptr custom deleter doing nothing.

A custom deleter is a function being called when the last shared_ptr goes out of score. Per default the object gets deleted, but you can insall custom deleters as well. This one does nothing.

*  // Some class providing a std::istream
*  struct InpuStream
* {
*   // Per deafult use std::cin.
*   InputStream()
*   : _stream( &std::cin, NullDeleter() )
*   {}
*   // Or read from a file.
*   InputStream( const Pathname & file_r )
*   : _stream( new ifgzstream( _path.asString().c_str() ) )
*   {}
*   // Or use a stream priovided by the application.
*   InputStream( std::istream & stream_r )
*   : _stream( &stream_r, NullDeleter() )
*   {}
*
*   std::istream & stream()
*   { return *_stream; }
*
* private:
*   shared_ptr<std::istream> _stream;
* };
* 

Definition at line 75 of file PtrTypes.h.

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The documentation for this struct was generated from the following file:

• zypp/base/PtrTypes.h