What I got from the discussion on existentialism was that the true meaning of life was life itself, that everyone could decide how they live their own lives and what else they would give meaning to. I would argue that Meursault has existentialist qualities, but he lacks some that are very important.
By killing the Arab, Meursalt doesn’t give the Arab the chance to have a meaningful life. If Meursault believed that life was important, then I think he would have restrained himself. How I see it, an existentialist would understand that other peoples lives have value, even if there is no value to the existentialist. Furthermore, at the end of the book Meursault says, “But everybody knows life isn’t worth living.” (page 114) If Meursalt was a true existentialist then he would have found meaning in the fact that he was alive.