迭代升压multi_array

Question

I am having a problem with what I think should be an easy piece of code. I have a 2D array that is N x M, currently stored in a boost multi_array. The N columns represent spatial dimensions eg x,y,z and the M rows are points along each dimension.

What I would like to do is print all possible combinations of points along each dimension

For example, if my array is:

-1 -1
 1  1

I want to print:

-1 -1
 1 -1
-1  1
 1  1

I just cant make it work and I always go out of range on the array. I have tried using iterators and accessing the elements as A[i][j], but with no luck. Anyone have any suggestions or thoughts?

Answer 1

You're likely not resetting the iterators by setting them back to begin(). A better strategy is not reusing the iterators at all. Make them local to the loop that you're using them in.