Function copy constructor

Question

I am struggling to use the copy constructor of the class Function.
What is the reason why this is not the way to copy a Function?

Function* other;
... // steps to give value to other
Function* this = new Function(*other);

I get the following error :

Vectors must be of the same length when assigning. Consider using the copy constructor instead.

Comments

You need to post complete code. I can't tell from the post what you've done to other.