Ostream

In C++ std::ostream is the base class for output streams.

Std

The C++ Standard Library, and its namespace



Standard output int

Example

"Since std cout is an ostream object its type is derived from std ostream it cannot be copied;std istream and std ostream objects cannot be copied"

from question  

Does cout object remain a single instance, i.e. it never gets copied?

"Std cout is a global object of type std ostream not std ofstream;std ofstream is a derivative of std ostream"

from question  

Error in operator << overloading - no operator found

"The downside is that the only place it prints its output is standard output you may send an std ostream object and use it instead of std cout converting an int to an std string is very conveniently possible with std to_string"

from question  

How do I overload the pre and post increment operators for an object that is composed of a day and month to be printed as a std::string?

Others

Example

Just use std string and std ostream;ostream works with more of the stl and with strings you don t have to care about its memory usage and potential memory-leaks

from question  

High cpu loading. C++/sfml

Or simply std ostream s wouldn t work mdash;because std ostream has no accessible default constructor

from question  

C++ - using std namespace and dependancies

So if using std ostream is more limiting than std basic_ostream

from question  

Overload of operator<< with basic_ostream

The actual thing that does the writing in the iostreams api is std ostream it s also easier to remember to use and write rather than deal with the maze of cryptically named functinos that is the streambuf api

from question  

How to write data(binary mode) in to a file only using std::filebuf?

Std streambuf has a virtual function overflow which you can override and use to alter the bytes before passing them to the wrapped output class;std ostream is not the best place to implement filtering

from question  

Writing an ostream filter?

It s complaining that str is missing in aka std ostream not std ostringstream;std ostringstream s still returns it inherits these operators from std ostream which has no str member

from question  

Visual Studio: "str() is not a member of std::ostringstream"

That expression does have type std ostream

from question  

Clang AST matching ostream <<

You cannot use since std ostream does not have a copy constructor;even if std ostream had a copy constructor using the above interface would cause the following problems

from question  

Passing a reference argument and returning a reference

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