Difference between Objective-C and Swift (Objective-C vs Swift)

Swift

  • Introduction Swift is the programming language which was developed by Apple Inc for iOS which adopts the best of C and Objective-C with the constraints.
  • Invented By Swift was first appeared in june 2, 2014 by Apple Inc worldwide developer conference
  • Swift is friendly to new programmers which support playgrounds an innovative feature which allow programmer to experiment with the code and see results immediately without run the app.
  • Influenced by Objective-C, Ruby, C#.
  • Operating System iOS, OS X
  • Static or Dynamic Swift brings type safety to iOS development and because of the static type can optimize call and directly call the methods or virtual table.
  • Tuples Swift already has added tuples.
  • Strings Swift strings are improvement over Objective-C without worrying about using a mutable or immutable string type. It also support the full Unicode character set and even be used in switch statement.
  • File extension.swift
  • Coding Difference Closure, generic, type interference, multiple return type, namespaces.
  • Features Design for safety, fast and powerful, interactive playgrounds, Objective-C interoperability, sytax improvement.
  • Some of the advantages of swift over Objective-C are memory is managed automatically, map and filter functional programming is a huge advantage, healthy debugging console in Xcode which include an interactive version of swift.

Objective-C

  • Introduction Objective-C is extension to C and purely Object-Oriented (oo) based programming language. The language was based on SmallTalk-80 which is extremely pure in OO sense.
  • Invented By It was developed in 1980s by Brad Cox.
  • Since, objective-C is beginning of iOS and there syntax is easy to understand features that makes it user friendly which also hold much importance and quite popular.
  • Influenced by C, SmallTalk.
  • Operating system Cross platform
  • Static or Dynamic Dynamic typing is support means type of the object it points is not checked at compile time. In addition you can add methods to existing classes at run-time.
  • Tuples No support for tuples in Objective-C. there is another way of lumping two or more values in one place. It is similar like a struct but simpler.
  • Strings By using NSString objective-C string is represented and it’s a subclass of NSMutableString which provide many different ways to creating objects. The simplest way is by using @”..”.
  • File extension.h ,.m ,.mm
  • Coding Difference Semicolons required, type must be declared, header files, pointers, alloc and init
  • Features Automatic Reference Counting (ARC), NSNumbers, NSDictionary and NSArray literals, dynamic typing, Categories, Dynamic run-time, Automatic garbage collection.

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