1. Safe

In present competitive market developing secure apps is high priority for all. Swift’s syntax and language constructions disbar the various types of mistakes possible in Objective-C, this constancy leads to fewer crashes and cases of troublesome behaviour.

2. Maintenance

In Swift, developers only need to maintain a single code file (.swift), while in Objective-C have two-file requirement header (.h) and implementation files (.m) which a bit harder and complicated. If programmers uses Swift then they can spend more of their time in improving code and creating app logic.

3. Fast

The performance of Swift is almost similar as that of C++, which is considered the fastest in algorithm calculation arithmetics. Objective-C is slower because it contains C API legacy. Swift removes the limitation of C language, also improved with help of the latest technologies.

Swift is 2.6x faster than Objective-C and 8.4x faster than Python 2.7.

4. Readability

Swift code more closely resembles plain English, which makes writing code more natural while enabling developers to spend far less time looking for problematic code. Swift have a clean syntax, and number of code lines needed to implement an option on Swift is a lot fewer than for Objective-C. This is because of drop in legacy conventions by Swift, like use of semi colons to end the lines or parentheses that surround conditional expressions inside if/else statements. Also, crucial change is that method calls do not sit inside each other resulting in a bracket mess.

5. Supports Dynamic libraries

Dynamic libraries are executable chunks of code that help to link one version of the Swift app to different versions of the app.

In Swift, dynamic libraries work to update the apps. The new version code is uploaded to the memory. This reduces the initial size of the Swift app making it the best performing app.

6. Backed by “Playgrounds”

Playgrounds is a Swift application that makes your iOS app development learning easy and entertaining with a feature that enables programmers to test out a new algorithm without having to create an entire app. This feature help beginners to visualize data without having detailed idea of Swift programming language. Playground and Swift together eases the work of the iOS developer and speed up the development cycle and create fully functional apps.

7. Open source

Apple announced swift as an open-source programming language for iOS on 3rd December 2015, that increases it chance to make it a developer-friendly programming language and collect direct feedbacks from community, which help in making improvements on consistent basis. So, Swift acquired a large supportive community and plethora of third party tools.

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