Learning Swift my comparing Objective-C

If you search Comparison between Swift and objC, you will find a lot of material.

Just for illustration: https:// www.educba. com/ swift-vs-objective-c/

Some of the major difference between Swift vs Objective C:
••• Swift is the latest programming language that is developed by Apple and can be run on various cross-platform operating systems such as Linux, Darwin, Free BSD, etc., whereas Objective C is a general-purpose, object-oriented programming language used by Apple in its operating systems and APIs Cocoa, etc.
••• Swift has several programming features such as safe programming patterns, syntax like Objective C, complete access to Cocoa frameworks, whereas Objective C also supports the same features as C++ except for STL and includes foundational frameworks.
••• Swift has object-oriented and procedural features in its language and in-built functionalities in its library, whereas Objective C has different data types, tokens to recognize the identifiers, declarations and assignments and pre-processor to define constants.
••• Swift supports different operators such as Arithmetic Operators, Logical Operators, Bitwise Operators, Relational Operators, Assignment Operators, Range Operators, and Miscellaneous Operators, whereas Objective C also supports the same operators except for range and pre-processors which are not part of the compilation process.
••• Swift supports Dictionaries, Functions, Closures, Enumerations, Structures, etc., whereas Objective C supports Posing, Extensions, Dynamic Binding, Protocols, Composite Objects, Memory Management, and Enumerations.
••• Swift supports optional chaining, typecasting, generics, protocols, subscripts, etc., whereas Objective C allows dynamic dispatch, auto-generation of accessors to access member variables and properties and allows a method and a name to share the same identifier.
••• In Swift, calling a method will be decided at compile time and is similar to object-oriented programming, whereas in Objective C, calling a method will be decided at runtime, and also Objective C has special features like adding or replacing methods like on a class which already exists.
••• In Swift, errors can be handled using protocols to avoid the unexpected flow of program control, whereas Objective C has nil which can be safely handled in a powerful way by safely sending messages to nil objects.
••• In Swift, operator overloading is supported and is global in terms of scope and simple, whereas Objective C does not support default parameters but can be implemented by multiple methods manipulation and also do not support private members.
••• In Swift, Arc (Automatic Reference Counting) is the feature that handles the garbage collection where emptied memory is allocated to the required processes. In contrast, Objective C does not support stack-based memory objects and allocating memory in Objective C is very expensive. It plays a key role in writing successful programs for the delivery of efficient applications.
••• In Swift, class objects are declared normally. They are similar to that of general object-oriented programming languages. In contrast, Objective C has a composite object feature with an embedded object inside an object, which means a private cluster object will be embedded into the main object and some primitive methods.
••• In Swift, advanced operators exist to handle the manipulation of the complex value, whereas Objective C has a fast enumeration feature where collections are core components of this feature.

There are also translators from objC to Swift (each on web), but they do not handle all languages features. Just for basic conversion.


Why do you need this comparison ? Maybe you are an objC expert ?
Anyway, it may not the best idea to try to learn by comparison. I feel it is better to learn Swift per se, and then find out, when needed how to port something to wifi if you convert some code.

Yes, I have 10+ years of experience in Objective-C, now wanted to learn Swift in a short amount of time.

So my advice is not to try to learn Swift by comparing to ObjC.
You know the most important : Xcode and API, OOP.
The language itself is pretty straightforward to learn for an experienced programmer.

Of course I meant "porting to Swift", not to "wifi"… spell checker joke.

Sure, I am NOT looking for any online tool to port. Basically I was looking for something like below so that I can learn little faster.

NSInteger count = 5 - > var count:Int = 5
NSArrary *array = @[@5,@4] -> var array = [5,4]

I don't know of such tutorial.
Just general comparisons as : https:// www.altexsoft. com/blog/engineering/swift-vs-objective-c-out-with-the-old-in-with-the-new/

But really, if you start with Apple tutorial on Swift, Starting App development with Swift, you will learn extremely fast.