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How to overload an operator with multiple parameters like a + b + c?


How to overload an operator with multiple parameters like a + b + c?

By : sanjay
Date : November 28 2020, 01:01 AM
I wish this helpful for you That's because there is no such operator in general.
a + b + c is (a + b) + c. First a + b, then the results of that added to c.
code :


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How do I overload () operator with two parameters; like (3,5)?

How do I overload () operator with two parameters; like (3,5)?


By : Chelsea Cerame
Date : March 29 2020, 07:55 AM
wish help you to fix your issue I have a mathematical matrix class. It contains a member function which is used to access any element of the class. , Return a reference to the element in the overloaded operator().
code :
template<class T>
class Matrix
{
    public:
        T& operator()(uint64_t unRow, uint64_t unCol);

        // Implement in terms of non-const operator
        // to avoid code duplication (legitimate use of const_cast!)
        const T&
        operator()(uint64_t unRow, uint64_t unCol) const
        {
            return const_cast<Matrix&>(*this)(unRow, unCol);
        }
};

template<class T>
T&
Matrix<T>::operator()(uint64_t unRow, uint64_t unCol)
{
    // return the desired element here
}
What does it mean to overload operator bool with two parameters?

What does it mean to overload operator bool with two parameters?


By : user2529923
Date : March 29 2020, 07:55 AM
I hope this helps you . That is not "operator bool", but operator(), with two T arguments, returning a bool. In other words, it is a binary predicate. You can use it like this:
code :
struct Foo
{
  bool operator()(const T&, const T&); // should probably be const
};

... 
Foo f;
T t1, t2;
bool b = f(t1, t2);
overload the bracket operator with multiple parameters

overload the bracket operator with multiple parameters


By : jocantaro
Date : March 29 2020, 07:55 AM
hope this fix your issue Currently, you have a class Matrix with an attribute matrix which is a numpy array. Therefore you would need to reference the attribute first and then pass the indices:
code :
>>> m.matrix[5,5]
5
class Matrix(np.ndarray):
    def __new__(cls, shape, fill_value=0):
        return np.full(shape, fill_value)

>>> m = MyMatrix((10, 10), 5)
>>> print(m[5, 5])
>>> 5
Why pass by const reference in overload operator+ with multiple parameters

Why pass by const reference in overload operator+ with multiple parameters


By : kinesine
Date : March 29 2020, 07:55 AM
hope this fix your issue I am doing operator+ overloading with multiple parameters as below. , Look at your operator+ signature:
code :
friend Integer operator+ (Integer & a, Integer & b)
//                        ^^^^^^^^^    ^^^^^^^^^
Integer d = a+b+c;
c++ Parameters not passed into operator overload<

c++ Parameters not passed into operator overload<


By : Sugavaneshwaran A
Date : March 29 2020, 07:55 AM
help you fix your problem When creating an operator overload for a class "State", the operator that i've overloaded does not have any member variables initialized.
code :
bool operator<( State m)const
State(const State& s)
{
    for (int i = 0; i < SIZE; i++)
        for (int j = 0; j < SIZE; j++)
            board[i][j] = s.getValue(i, j);
}
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