@SuppressWarnings("unchecked")
public static <T> T[][] deepCopyOf(T[][] array, Class<? extends T> clazz) {
int secondLength = 0;
for (T[] layer : array) if (layer.length > secondLength) secondLength = layer.length;
T[][] copy = (T[][]) Array.newInstance(clazz, array.length, secondLength);
for (int i = 0; i < array.length; i++) {
T[] copyArray = (T[]) Array.newInstance(clazz, secondLength);
for (int j = 0; j < copyArray.length; j++) {
T obj = null;
if (array[i][j] instanceof Cloneable) obj = General.unsafeClone(array[i][j]);
else if (array[i][j] instanceof String) obj = array[i][j];
else if (clazz.isPrimitive()) obj = array[i][j];
copyArray[j] = obj;
}
copy[i] = copyArray;
}
return copy;
}
