https://stackoverflow.com › ... › what-are-the-basic-rules-and-idioms-for-operator-overloading

The Three Basic Rules of Operator Overloading in C++. The Decision between Member and Non-member. Common Operators to Overload. Assignment Operator. Stream Insertion and Extraction. Function Call Operator. Logical Operators. Arithmetic Operators. Subscript Operator. Operators for Pointer-like Types.

https://stackoverflow.com › questions › 8869986

It would be good if the extraction operator had transaction semantics, i.e. either it updates all three members or otherwise it leaves the object in its previous state. One way to do that would be to read into local variables first, and only if all three reads succeed copy the values into cl .

https://en.cppreference.com › w › cpp › language › operators

When an operator appears in an expression, and at least one of its operands has a class type or an enumeration type, then overload resolution is used to determine the user-defined function to be called among all the functions whose signatures match the following:

https://coderscratchpad.com › c-operator-overloading-the-stream-extraction-operator

In this article, we’ll explore one such operator—the stream extraction operator (>>), which is typically used to read input. We’ll learn how to tweak this operator so it can handle custom classes, allowing your code to interact with your own types just as smoothly as it does with built-in types. Let’s dive in and discover how ...

https://www.tutorialspoint.com › cplusplus › input_output_operators_overloading

C++ is able to input and output the built-in data types using the stream extraction operator >> and the stream insertion operator <<. The stream insertion and stream extraction operators also can be overloaded to perform input and output for user-defined types like an object.

https://www.cs.helsinki.fi › ... › reference › en.cppreference.com › w › cpp › language › operators.html

The overloads of operator>> and operator<< that take a std:: istream & or std:: ostream & as the left hand argument are known as insertion and extraction operators. Since they take the user-defined type as the right argument ( b in a@b ), they must be implemented as non-members.

https://www.learncpp.com › cpp-tutorial › overloading-the-io-operators

Fortunately, by overloading the << operator, you can! Overloading operator<< is similar to overloading operator+ (they are both binary operators), except that the parameter types are different. Consider the expression std::cout << point. If the operator is <<, what are the operands?

https://en.cppreference.com › w › cpp › io › basic_istream › operator_gtgt2

3) Calls the appropriate extraction operator, given an rvalue reference to an input stream object (equivalent to st >> std:: forward < T > (value)). This overload participates in overload resolution only if st >> std:: forward < T > ( value ) is well-formed and Istream is a class type publicly and unambiguously derived from std::ios ...

https://www.tutorialspoint.com › overloading-stream-insertion-and-extraction-operators...

C++ is able to input and output the built-in data types using the stream extraction operator >> and the stream insertion operator <<. The stream insertion and stream extraction operators also can be overloaded to perform input and output for user-defined types like an object.

https://patterns.cs.up.ac.za › docs › cpp › cpp › language › operators.html

The overloads of operator>> and operator<< that take a std:: istream & or std:: ostream & as the left hand argument are known as insertion and extraction operators. Since they take the user-defined type as the right argument ( b in a@b ), they must be implemented as non-members.