• Creative Corner
  • Tips
  • Blog
13 July, 2017

Swift 4 – A Step Ahead to The Most Advanced Programming Language

9series | 0Comment(s)

Hey, welcome back!!! Let’s move one step ahead with the open source development language from Swift 3 to Swift 4. We, at 9series, have filtered out points of our next strides in developing mobile apps using Swift 4.

Swift-4---A-Step-Ahead-to-The-Most-Advanced-Programming-Language

Swift 4 is the latest major release for iOS App Developer that is intended to be completed in the fall of 2017. Its main focus is to provide source compatibility with Swift 3 code while implementing essential feature work that needs to achieve binary stability in the language. It will contain valuable enhancements to the core language and Standard Library, particularly in the generics system and an overhaul of the String type.

Source Compatibility Modes

The Swift 4 compiler will provide two language modes: Swift version 3 and Swift version 4. Swift 3 established the language for source-level stability and now Swift 4 releases source compatibility as a feature moving ahead.

  • Swift 3 mode is default for existing code and will build source code that works with the Swift 3 compiler
  • Swift 4 mode allows you to use new features and performance optimizations of Swift 4, some of which may require migration
  • Mixed mode allows you to take advantage of interoperability between binaries built with the same compiler. The proposed design is that a project containing various Swift modules, such as a Xcode project with multiple Swift targets, will be able to ratify into the specific Swift language mode on per module (target) level and that they can smoothly interact within the same compiled binary.

New Features in Swift 4

  • Swift 4 presents another codable protocol that gives a chance to serialize and deserialize custom data types without composing any special code – and without worrying about losing your value types
  • Quicker and simpler to use strings that retain Unicode correctness and add support for using, creating and managing substrings
  • Smart key paths for type-safe, effective and extensible key value coding for Swift types
  • Enhancements to create and manipulate Dictionary and Set types

Swift has many other features to make your code more expressive:

Multi-Line String Literals

To start a string literal, you need to write three double quotation marks: “”” then press return. After pressing return key, start writing strings with any variables, line breaks and double quotes. To end multi line string literal again write ””” in new line. Ex:-

1

Strings are Collections

Just like in earlier version of Swift, Strings can be handled as a collection. No need to write string.characters.something to perform string manipulation.

2

Dictionary Functionality has Improved

Swift 4 combines some additional functionality to dictionaries to make them more strong, and also to make them work more like you would expect. Let’s start with a simple example: Modifying dictionaries in Swift 3 does not return a new dictionary. Instead, it returns an array of tuples with key/value labels.

3

After that code runs you can’t read distinction[“Maths”] because it is no longer a dictionary. Instead, you need to use distinction[0].value, which is not good for us because we apply filter on dictionary and we got an array.

As of Swift 4, this acts more like you would expect: you get back a latest dictionary. Obviously this will break any existing code that relies on the array return type.

Similarly, the map() method on dictionaries got a key-value tuple passed in, and could return a single value to be added to an array.

4

That has not changed in Swift 4, but there is a new method called mapValues(). It allows you to modify the values and place them back into a dictionary using the original keys.

Here we try to form different buckets where each bucket will contain values having same first character in their name. For Example:-.

5

It’s now likely to obtain a dictionary key and provide a default value to use if the key is missing. In following statement if there is no value for key “Bio” found then it will print default value.

6

Built in Encoding and Decoding

Swift 4 appears with built-in encoders and decoders for JSON. JSON to Model conversion comes in built in.

7

One Sided Range

Swift 4 introduces Python-like one-sided collection slicing, where the missing side is automatically assumed to be the start or end of the collection.

8

Conclusion

Like with other Swift releases, 4.0 was announced at WWDC ’17 and released in beta form for developers alongside Xcode 9. This release of Swift added quite a few refinements and features to the programming language. First release of Swift 4.0 will bring overall stability to the source and binary interface, or ABI.

Stay tuned for other technical and development articles.

Recent Posts

  • Easy Methods To Share Files From Host To Docker

  • 9series Inc - Clutch Year In Review 2021

  • A Quick Comparison of Docker vs. VM: Which DevOps Tool is Best?

  • Latest Update on Docker Paid Subscription for Big Enterprise

  • How to Become a Successful Travel Agent in New York

Categories

  • .Net MVC (3)
  • AI Solutions (2)
  • Amazon DynamoDB (1)
  • Android (24)
  • Android App Developers (2)
  • Android app development (7)
  • Angularjs Development (4)
  • Apple (25)
  • Artificial Intelligence (1)
  • Artificial Intelligence Solutions (3)
  • Beacon Technology (4)
  • Best Christmas Offer (2)
  • Blockchain Technology (2)
  • Cloud Service (2)
  • Clutch (1)
  • custom mobile app development services (4)
  • DevOps (1)
  • Digital Marketing (9)
  • Django (2)
  • Docker (11)
  • E-Learning Technology (3)
  • Ecommerce (1)
  • Events (4)
  • Flutter app development (1)
  • GDPR (1)
  • Google I/O (1)
  • Graphic Design (12)
  • html5 developers (2)
  • Human Resource (5)
  • Infographics (33)
  • iOS (21)
  • Laravel Development (2)
  • machine development companies in India (1)
  • Machine Learning (4)
  • Marketing (9)
  • mean stack development (1)
  • Microsoft (11)
  • Mobile App Design (3)
  • Mobile App Development (48)
  • Moodle Development (1)
  • next-generation technology (6)
  • Node.js (2)
  • Online Marketing (1)
  • Open Source (11)
  • open source Javascript framework (1)
  • Opening Ceremony (1)
  • Python (3)
  • Python Development (4)
  • Responsive Website Development (9)
  • SaaS App Development (2)
  • Search Engine Optimization (4)
  • Social Media Marketing (2)
  • Software Development Company (2)
  • Technology (44)
  • Testing (11)
  • Top Laravel Development (1)
  • Travel and Hospitality Technology Solution (4)
  • Typescript (1)
  • UI Design Company India (1)
  • UI Design Services (1)
  • UI/UX Design (10)
  • Uncategorized (11)
  • VueJS (3)
  • Web Application Development (8)
  • Website Design (2)
  • Website Development Company (7)

Archives

  • February 2022  (2)
  • January 2022  (1)
  • October 2021  (2)
  • September 2021  (3)
  • August 2021  (3)
  • July 2021  (1)
  • June 2021  (4)
  • May 2021  (1)
  • April 2021  (2)
  • March 2021  (1)
  • February 2021  (3)
  • January 2021  (1)
  • December 2020  (1)
  • November 2020  (2)
  • October 2020  (2)
  • September 2020  (1)
  • August 2020  (3)
  • July 2020  (2)
  • June 2020  (4)
  • May 2020  (3)
  • April 2020  (4)
  • March 2020  (4)
  • February 2020  (3)
  • January 2020  (2)
  • December 2019  (6)
  • November 2019  (1)
  • October 2019  (4)
  • September 2019  (4)
  • August 2019  (5)
  • July 2019  (3)
  • June 2019  (5)
  • May 2019  (2)
  • April 2019  (2)
  • February 2019  (5)
  • January 2019  (2)
  • December 2018  (2)
  • November 2018  (3)
  • October 2018  (6)
  • September 2018  (6)
  • August 2018  (7)
  • July 2018  (5)
  • June 2018  (5)
  • May 2018  (6)
  • April 2018  (8)
  • March 2018  (2)
  • November 2017  (1)
  • October 2017  (1)
  • September 2017  (3)
  • August 2017  (2)
  • July 2017  (3)
  • June 2017  (5)
  • May 2017  (4)
  • April 2017  (6)
  • March 2017  (8)
  • February 2017  (6)
  • January 2017  (4)
  • December 2016  (3)
  • November 2016  (4)
  • October 2016  (2)
  • September 2016  (3)
  • August 2016  (3)
  • July 2016  (2)
  • June 2016  (3)
  • May 2016  (3)
  • April 2016  (2)
  • March 2016  (3)
  • February 2016  (3)
  • January 2016  (4)
  • December 2015  (3)
  • November 2015  (4)
  • October 2015  (4)
  • September 2015  (5)
  • August 2015  (2)
  • July 2015  (2)
  • June 2015  (5)
  • May 2015  (3)
  • March 2015  (3)
  • October 2014  (4)
  • September 2014  (9)
  • August 2014  (4)
  • July 2014  (6)
  • June 2014  (1)
  • May 2014  (3)
  • April 2014  (2)
  • January 2014  (1)