Either way, is really the best solution that women create their own hacker spaces where they can avoid the guys? Surely interacting with your fellow human beings and letting them know how you feel is a better solution?
Now, I come from a European country, where things like wolf-whistling at a pretty woman on the street is an unthinkable act for a sane, sober man. And I sincerely believe that increasing, not reducing, the interactions between girls and boys, men and women, is the key to reducing gender inequality.