In this post, I may be jogging you throughout the modifications/changes I found when porting from Objective C to Swift Don’t mistake this with Convert to swift characteristic in Xcode. The variations can be more of a design / semantical in nature and never one to one mapping of syntax. Fo e. g.
I will not say that to claim a class, you operate class keyword in swift in its place of @interface in Objective C. These differences are not anything new in any object oriented languages. However, Objective C being dynamic typed language, It need a attitude change to application in swift, especially if you have been coding in Objective C for a long time.