Yurttas/PL/OOL/Cplusplus/F/03/02/00/02.html

Dr.Salih Yurttas - yurttas@zcubes.com

programming languages - design principles, implementation constructs

c++

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1. abstraction mechanisms: classes and operator overloading
   1. operator overloading
      1. basic rules - binary and unary operators
         • binary operators - [ +, +=, == ]
           • a binary operator can be defined either a member function taking one argument or a friend function taking two arguments.
           • for any binary operator @, aa@bb can be interpreted as either aa.operator@(bb) or operator@(aa,bb).
           • if both are defined, aa@bb is an error.
         • unary operators - [ -, &, [] ]
           • a unary operator, whether prefix or postfix, can be defined either a member function taking no argument or a friend function taking one argument.
           • for any unary operator @, both aa@ and @aa can be interpreted as either aa.operator@() or operator@(aa).
           • if both are defined, aa@ and @aa are errors.

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1 | basic facilities << 3 >> class derivation | 5 | 6 | 7 | 8

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