When I try to use the append function I get this error
Error in append("m", "m", "f", "f", "m") : unused arguments ("f", "m")
but when I use c("m", "m", "f", "f", "m") it doesn't throw any error.
Error in append(emp.list, emp.ages, emp.sex, after = emp.ages) : unused argument (emp.sex)