how to erase element in 2d vector?

Question

I want to delete an element in a 2d vector, say [1][1] in Field, which is a 4x5 vector

I tried

Field.erase([1][1]);

I know that for a 1d vector, I would just do

Field.erase (Field.begin()+1)

but what about for 2d vectors?

Answer 1

Field[1].erase(Field[1].begin() + 1);

That's how you erase an element. But by your comments, that's not what you really want. What you actually want is to clear the value of the element to it's default value. For that:

Field[1][1] = Card();