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C++ streambuf - pubsetbuf
Description
It is used to set buffer array and calls the protected virtual member setbuf with the same arguments s and n.
Declaration
Following is the declaration for std::basic_streambuf::pubsetbuf.
basic_streambuf* pubsetbuf (char_type* s, streamsize n);
Parameters
s, n − These arguments that may be used by overriding functions in derived classes.
Return Value
It always returns this.
Exceptions
Basic guarantee − if an exception is thrown, the stream buffer is in a valid state.
Data races
Both this call and further calls to other member functions may access and/or modify the first n characters in the array pointed by s.
Example
In below example explains about std::basic_streambuf::pubsetbuf.
#include <fstream> int main () { char mybuffer [1024]; std::fstream filestr; filestr.rdbuf()->pubsetbuf(mybuffer,1024); return 0; }
streambuf.htm
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