I know multiple technologies like iOS, Android, Ruby on rails and somewhat python. I have side projects also and worked on official projects. I was wondering should I mention multiple skill or single skills on resume. My primary technology is iOS.<p>How recruiters choose resume.  I have some very bad experience in past as I have shown some of great achievements of stackoverflow and github which are very good but none of big companies choose my resume instead they choose my colleagues resumes which are just ordinary and have nothing special.<p>I want to know If I mention multiple skills on resume is it good point or bad point. How recruiters select resumes.
Should I put single skill or multiple skills on my Resume