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  • Yuan Peng Chiang thinks this is interesting:

Operators for built-in types such as int cannot be overloaded. The precedence order cannot be changed, and the arity of the operator—whether it is unary, binary, or trinary—cannot be altered


Cover of Sams Teach Yourself C++ in 24 Hours, fifth edition


arity: 参数数量. the number of arguments that a function can take