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As in, should the operator>> match the operator<< ?
Database Example:
If the operator>> reads in something of the following format:
2
Joe 500 20 1
Bob 250 30 0
should the operator<< output that? Or something like this:
Record: 1/2
Name: Joe
Balance: 500
Transactions: 20
Premium Account: Yes
And then have a separate writeFile() function?
I know either would work, but what is the "accepted standard"?
832
The operator<< function can't be a member of your own class, because the left-hand operand is an ostream object. 2. The first parameter has to be a reference-type parameter because you want os to be the very same stream object that the operator is applying to, and not a copy of it.
We can overload the '>>' and '<<' operators to take input in a linked list and print the element in the linked list in C++. It has the ability to provide the operators with a special meaning for a data type, this ability is known as Operator Overloading.
By overloading the operators, we can give additional meaning to the operators like +-*/=.,= etc., which by default are supposed to work only on standard data types like int, float, char, void etc. It is an essential concept in C++.
If you have an istream operator>> overload for a type that reads data in a particular format, then if you implement an ostream operator<< overload for the same type, it should output in the same format (otherwise, it could get quite confusing).
136
This kind of operator overloading is IMO a big misuse and misconception. Use overloading where it really makes some sense.
For debug purposes, have toString() and override << to call it.
Do not override >> at all.
>> and << generally serve for sending serialized data to streams, not for communication with user.
My 2 eurocents.
33
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