Hi, I was curious how memory is handled when objects with the assignment operator in Eigen.

If I do
Eigen::ArrayXf myArray, someOtherArray;
Initialize them, put some data inside.

when I do,

myArray = someOtherArray;

Does myArray try to minimize its re-allocation with a conservativeResize?

Hi,

Assignment uses resize and not conservativeResize thus re-allocations are never used.

The question on the other hand side is whether re-allocation is faster than a simple allocation of uninitialized memory. I guess the current approach is already optimal.

Regards,
Hauke