Rubuta ci gaba don wannan sakin layi - Darko shine ƙaramin ɗan sanannen likitan Slovenia daga Carniola, Franc Ribnikar kuma ɗan'uwan Vladislav Ribnikar. An koyar da shi a Svilajnac da Belgrade. Ya kammala karatunsa a fannin shari'a a Jamus (Berlin da Jena). Bayan mutuwar mahaifinsa, a cikin 1905, ya koma Belgrade don taimaka wa ɗan'uwansa Vladislav tare da "Politika". Shi ne babban editan jaridar amma kuma ya yi aiki a matsayin wakilin musamman a Romania a lokacin juyin juya halin Peasant na 1907
da kuma lokacin Friedjung tsari a Vienna a 1909.