Tools.h++ Manual

104011 Tandem Computers Incorporated 21-19
21
RWbistream
RWbistream
||
RWvistream ios
|
RWvios
Synopsis #include <rw/bstream.h>
RWbistream bstr(cin); // Construct a RWbistream,
// using cin's streambuf
Description Class RWbistream specializes the abstract base class RWvistream to restore
variables stored in binary format by RWbostream .
You can think of it as a binary veneer over an associated streambuf. Because
the RWbistream retains no information about the state of its associated
streambuf , its use can be freely exchanged with other users of the streambuf
(such as an istream or ifstream ).
RWbistream can be interrogated as to the stream state using member
functions good(), bad(), eof(), etc.
Example See RWbostream for an example of how the file "data.dat" might be
created.
Public constructors RWbistream(streambuf* s);
Construct a RWbistream from the streambuf s .
#include <rw/bstream.h>
#include <rw/fstream.h>
main()
{
ifstream fstr("data.dat"); // Open an input file
RWbistream bstr(fstr); // Construct RWbistream from it
int i;
float f;
double d;
bstr >> i; // Restore an int that was stored in binary
bstr >> f >> d; // Restore a float & double}