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What's the deal with operator overloading? | |
13.2 | What are the benefits of operator overloading? |
13.3 | What room some instances of operator overloading? |
13.4 | Is operator overloading an alleged to do the class' password clearer? |
13.5 | What operator can/cannot it is in overloaded? |
13.6 | Overloading operator== to usage string comparison? |
13.7 | Can I develop operator** because that to-the-power-of? |
13.8 | But which operator should ns override? |
13.9 | Guidelines / "rules of thumb" because that overloading operators? |
13.10 | Creating a subscript operator for a matrix class? |
13.11 | Should mine Matrix interface look choose an array-of-array? |
13.12 | Part two of making mine Matrix interface look favor an array-of-array? |
13.13 | Designing classes from the outside-in vs. Inside-out? |
13.14 | Overloading prefix/postfix develops of operators ++ and also --? |
13.15 | Which is an ext efficient: i++ or ++i? |

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Use operator() quite than operator<>.When you have actually multiple subscripts, the cleanest means to execute it is withoperator() rather than through operator<>. The reason is thatoperator<> constantly takes precisely one parameter, however operator()can take any number of parameters (in the instance of a rectangle-shaped matrix, twoparameters are needed).For example:class procession public: Matrix(unsigned rows, unsigned cols); double& operator() (unsigned row, unsigned col); ← subscript operators regularly come in pairs dual operator() (unsigned row, unsigned col) const; ← subscript operators frequently come in pairs ... ~Matrix(); // Destructor Matrix(Matrix const& m); // Copy constructor Matrix& operator= (Matrix const& m); // Assignment operator ...private: unsigned rows_, cols_; double* data_;;inlineMatrix::Matrix(unsigned rows, unsigned cols) : rows_ (rows) , cols_ (cols) //data_ = rows_ || col >= cols_) litter BadIndex("Matrix subscript out of bounds"); return data_