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ifstream::attach

Usage

   #include <fstream.hpp>
   void ifstream::attach(int file_descriptor);

Description

   Attaches the ifstream to the specified file. Fails if the stream is
   already attached to a file, and sets the error state to ios::failbit.

Example 

   ifstream ifs;
   int fd = open(...);
   ifs.attach(fd);

Return Value

   None.