But there's almost a decade of existing Obj-C code (I'm guessing iOS apps comprise the bulk of objective C code). I would have thought porting that To Swift wou

But there's almost a decade of existing Obj-C code (I'm guessing iOS apps comprise the bulk of objective C code). I would have thought porting that To Swift would be a Herculean effort - but I'm not using either language so maybe I'm not best placed to talk about this