[SOLVED] How to preallocate an array of class in MATLAB?

I have an array of objects in MATLAB and I've called their constructors in a loop:

antsNumber  = 5;
for counter = 1: antsNumber
    ant(counter) = TAnt(source, target);
end

MATLAB warns me to use preallocation to speed up the process. I do know the benefits of preallocation but I don't know how to do that for objects.

The following link might be of help:

http://www.mathworks.com/help/techdoc/matlab_oop/brd4btr.html#brd4nrh
Web archive of dead link