Defining the []= operator
arrays, c++, operator-overloading
Solution
That's not how it works, the `[]` operator should return a reference the element at that index, and that element (type) should support `operator=` (i.e. `Point::operator=`)
Problem
I'm writing a class Grid whose elements are Points - an (int) grid each of whose squares has a (double) point in it. I've already defined this (the height value is stored elsewhere): ``` Point &operator[](Point p) { return floor(get_x(p)) + height * floor(get_y(p)); } ``` and I want to define the assignment operator. How would one go about this? Is it defined automatically based on the `[]` operator? So far I have ``` Point &operator[]=(Point p, Point q) { data[floor(get_y(p)) * height + floor(get_x(p))] = q; } ``` but that seems like a circular definition.