mogenerator: mai più rigenerare le classi dei modelli Core Data manualmente

"mogenerator is a com­mand-li­ne tool that, gi­ven an .xcdatamodel fi­le, will ge­ne­ra­te two clas­ses per en­ti­ty. The fir­st class, _MyEntity, is in­ten­ded so­le­ly for ma­chi­ne con­sump­tion and will be con­ti­nuou­sly over­w­rit­ten to stay in sync wi­th your da­ta mo­del. The se­cond class, MyEntity, sub­clas­ses _MyEntity, won’t ever be over­w­rit­ten and is a great pla­ce to put your cu­stom lo­gic.

Dio, gra­zie.