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In the C++ reference page here it has a table of operators, but I don't understand what the operator@ is. For example:
@a (a).operator@ ( ) operator@ (a) !std::cin calls std::cin.operator!()
However there's no such operator in the language. What does it mean?
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In mathematics and sometimes in computer programming, an operator is a character that represents an action, as for example x is an arithmetic operator that represents multiplication. In computer programs, one of the most familiar sets of operators, the Boolean operators, is used to work with true/false values.
What is Operator? Simple answer can be given using expression 4 + 5 is equal to 9. Here 4 and 5 are called operands and + is called operator.
An operator is used to manipulate individual data items and return a result. These items are called operands or arguments.
There are three types of operator that programmers use: arithmetic operators. relational operators. logical operators.
@ is not a valid C++ operator and It is used here as a placeholder for actual operators.
In short, it can be replaced by any of the actual C++ operators and the statement should hold good for that particular operator.
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The cppreference page as well as the C++ standard treat the @ character as a placeholder for real operators. It is not used to code.
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