WHAT IS SWIFT PROGRAMMING LANGUAGE AND WHY SHOULD YOU USE IT?

Swift was created by Apple in 2014 for iOS, watchOS, tvOS, macOS app development as a logical substitute for Objective-C, which had flaws and was outdated to a certain extent. Although Swift continues some of the Objective C concepts, e.g., extensible programming, the approach is different due protocol-oriented design and static typing. Swift supports Linux apps as well. Like any other programming language, it has both pros and cons.

In 2014, It was first presented at Apple’s Worldwide Developers Conference and caused mixed reactions - there were both critics and supporters. Most developers said it was too “raw” to use in production. However, each new release brought positive changes, and eventually it occupied a well-deserved position among most popular technologies. It is also testified by the fact that the Swift community had been rapidly growing after Apple made it open source in 2015. According to the Tiobe index, which shows which programming language is worth adopting when starting a new project, Swift is in the12th place. Swift also boasts many handy third-party tools and is an increasingly popular choice, especially for small apps and startups. Apple is putting a lot of effort into making it desirable for coding and beginner-friendly, constantly introducing new great utilities and auxiliaries that fuel the interest. For instance, the Playgrounds app in 2016, which allows you to quickly learn programming in Swift. Besides, there are plenty of official e-books, podcasts, guidelines, and courses to foster language adoption.

Advantages of Swift

  1. Simplicity
    Concise syntax of Swift simplifies the development process - less code is necessary than with Objective-C for the same task, which means time economy for app building. Succinct syntax also ensures good readability, error prevention, fast and easy onboarding for new team members.

  2. Scalability of projects
    Apple will support the coding language in the future, and it makes projects in Swift easily scalable with new features. Therefore, it is a more reliable choice when it comes to long-term investment.

  3. Enhanced performance
    Ìt was initially designed to outperform Objective-C, and as many tests confirm, this goal was reached. Apple states that it’s 8.4x faster compared to Python and 2.6 -to Objective-C. Also, memory usage of the application is tracked with Automatic Reference Counting (the garbage collection function detects which instances are no longer used and eliminates them automatically), so there is no need to do it manually. Therefore, ARC allows boosting the apps performance without slowing down memory or CPU.

  4. High safety
    Thanks to its strong typing system and a shorter feedback loop, Swift allows to fix code errors very early before the deployment.

Decreased memory footprint
When building an app, developers use a proportion of third-party code - libraries or frameworks. Static libraries get locked in the code and make its file size and load time larger. Swift allows using dynamic libraries, which, on the one hand, take more time to call to, but reduce the apps memory footprint, on the other, as they load only when the task is run. Starting from version 5.0, standard Swift libraries become an integral part of all watchOS, iOS, tvOS and macOS releases, which means all apps created for them will be more lightweight.

  1. Interoperability with Objective-C
    It means that developers can add new features in Swift to the codebase in Objective C, or vice versa. It is valuable for large-scale projects that require extension or updating.

  2. Full stack
    Swift can be used both for client- and server-side development. With active support from IBM, the language is in the cloud and integrates with many popular backend technologies. It enables code sharing and reuse, again, reducing the development time.

  3. Open source
    Thanks to its active open-source community, Swift is getting better and stronger. The language supports Linux and Windows as an open source project.

Weaknesses of Swift

  1. Immaturity
    Some drawbacks of Swift are related to the fact that it is a young language. In the past, although Apple provides a tool for migrations between versions, it was not always easy, especially for large-scale projects and those containing both Objective C and Swift code. This problem was solved with the introduction of ABI stability on all Apple platforms, backward compatibility of all versions, and updated documentation. It is a big progress in language maturity. Module stability 384 made possible the creation of stable binary frameworks.

  2. Limited number of developers
    Despite its growing adoption, Swift still has a limited talent pool. According to StackOverflow Developer Survey 2019, only 6.8 % of professional developers use it, and few have extensive experience with it.

  3. Lack of support for earlier versions of iOS
    Swift is not compatible with apps targeting earlier versions than iOS7 and macOS 10.9. However, only up to 5% of devices run on those, respectively, there aren’t so many legacy projects for which it might constitute a problem.

Conclusion

Despite being a toddler in the programming languages world, Swift has proven its efficiency and is used by such companies as LinkedIn, Vimeo, Coursera, Twitter, etc. Considering all the effort Apple is taking to fix Swifts flaws with every new release, we many assume that it will eventually outflank Objective-C and become a leader for iOS mobile app development. Swift 5.2 is the latest version, launched on March 24, 2020. According to the Swift Core team, the language software ecosystem will continue to grow. Among the main goals: make it fully compatible with other platforms; improve installation and deployment processes for Swift-based software; extend libraries to make the language suitable for developing a variety of services and use cases, including machine learning.

#programming #mobile-apps

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WHAT IS SWIFT PROGRAMMING LANGUAGE AND WHY SHOULD YOU USE IT?
Houston  Sipes

Houston Sipes

1600430400

10 Free Online Resources To Learn Swift Language

Swift is a fast and efficient general-purpose programming language that provides real-time feedback and can be seamlessly incorporated into existing Objective-C code. This is why developers are able to write safer, more reliable code while saving time. It aims to be the best language that can be used for various purposes ranging from systems programming to mobile as well as desktop apps and scaling up to cloud services.

Below here, we list down the 10 best online resources to learn Swift language.

(The list is in no particular order)

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4 Fun Reasons to Avoid Using “Primitive” Swift Types in Your Code

Here is a list of four fun reasons you should avoid using data types such as Int and String to pass along and process the data in your Swift code. And a list of alternatives to use instead, so you can write much better code with just a few small changes to your current habits.

Note: I’ll troll around a bit because technical articles can be boring.

Note that I use the word Fun in a slightly sarcastic way, as in: “Losing is Fun”.

1. Primitive types aren’t documenting your code

When you see a function definition like this one, do you instantly know what both of the String will actually be?

func getData(for identifier: String) -> String {

Here, String can be anything, both the input String and the output String. If you’re developing the code alone, you will probably remember what is the typical content of those two.

I say probably, because as any developer knows — by Monday you may not remember what the code written on Friday does. It’s something I can promise you. Give this project a few months of a break and it will be easier for you to write the thing from scratch than to try to understand “what the poet had in mind”.

To (try to) ensure the inputs and outputs stay at least a bit clear, you will need to add comments to explain the details of what you expect those Strings to actually contain.

From the above function definition alone we only know we’re looking for some identifier. We may understand from the context of the app what that may be, but what is the result of this function exactly?

Will it give us some kind of person’s name? Or maybe a large chunk of JSON data? Maybe a specific number of animal emojis such as a 🐐 and a 🐠? For no reason. But a String can be all those, so make sure that your code will handle every possible case now. I think you see my point.

In reality, nobody knows what those are until they check the actual code of the function.

We have powerful IDEs (such as Xcode), which provide developers with previews of possible completions. They are useless in this case. Imagine what you would think if you were working on someone else’s code and you stumbled upon the above definition as an Xcode suggestion. My guess is: some rude words will be included in your reaction.

You can’t understand what is happening until you check the code or documentation. And chances are, if you see this kind of String usage, you won’t find any docs for that package or pod or repository. **And also, most docs can’t be trusted because we don’t like to write docs, maintain docs and keep up with the changes in the code. **There is nothing that would force developers to keep the docs and comments in sync.

#swift #swift-programming #programming-languages #ios-app-development #programming

Cayla  Erdman

Cayla Erdman

1594369800

Introduction to Structured Query Language SQL pdf

SQL stands for Structured Query Language. SQL is a scripting language expected to store, control, and inquiry information put away in social databases. The main manifestation of SQL showed up in 1974, when a gathering in IBM built up the principal model of a social database. The primary business social database was discharged by Relational Software later turning out to be Oracle.

Models for SQL exist. In any case, the SQL that can be utilized on every last one of the major RDBMS today is in various flavors. This is because of two reasons:

1. The SQL order standard is genuinely intricate, and it isn’t handy to actualize the whole standard.

2. Every database seller needs an approach to separate its item from others.

Right now, contrasts are noted where fitting.

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Biju Augustian

Biju Augustian

1574340419

Guide to Python Programming Language

Description
The course will lead you from beginning level to advance in Python Programming Language. You do not need any prior knowledge on Python or any programming language or even programming to join the course and become an expert on the topic.

The course is begin continuously developing by adding lectures regularly.

Please see the Promo and free sample video to get to know more.

Hope you will enjoy it.

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Top Swift Development Companies | Top Swift Developers - TopDevelopers.co

A thoroughly researched list of top Swift developers with ratings & reviews to help find the best Swift development companies around the world.

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