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F#
F#

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JavaScript
JavaScript

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45K
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Swift
Swift

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1.1K
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What is F#?

F# is a mature, open source, cross-platform, functional-first programming language. It empowers users and organizations to tackle complex computing problems with simple, maintainable and robust code.

What is JavaScript?

JavaScript is most known as the scripting language for Web pages, but used in many non-browser environments as well such as node.js or Apache CouchDB. It is a prototype-based, multi-paradigm scripting language that is dynamic,and supports object-oriented, imperative, and functional programming styles.

What is Swift?

Writing code is interactive and fun, the syntax is concise yet expressive, and apps run lightning-fast. Swift is ready for your next iOS and OS X project — or for addition into your current app — because Swift code works side-by-side with Objective-C.
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    What are some alternatives to F#, JavaScript, and Swift?
    PHP
    Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world.
    Python
    Python is a general purpose programming language created by Guido Van Rossum. Python is most praised for its elegant syntax and readable code, if you are just beginning your programming career python suits you best.
    Java
    Java is a programming language and computing platform first released by Sun Microsystems in 1995. There are lots of applications and websites that will not work unless you have Java installed, and more are created every day. Java is fast, secure, and reliable. From laptops to datacenters, game consoles to scientific supercomputers, cell phones to the Internet, Java is everywhere!
    HTML5
    HTML5 is a core technology markup language of the Internet used for structuring and presenting content for the World Wide Web. As of October 2014 this is the final and complete fifth revision of the HTML standard of the World Wide Web Consortium (W3C). The previous version, HTML 4, was standardised in 1997.
    ES6
    Goals for ECMAScript 2015 include providing better support for large applications, library creation, and for use of ECMAScript as a compilation target for other languages. Some of its major enhancements include modules, class declarations, lexical block scoping, iterators and generators, promises for asynchronous programming, destructuring patterns, and proper tail calls.
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    Decisions about F#, JavaScript, and Swift
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    Reviews of F#, JavaScript, and Swift
    Avatar of Bessalitskykh
    Software Development Consultan at MLSDev Inc.
    Review ofSwiftSwift

    The performance of Swift is almost the same as that of C++, which is considered the fastest in algorithm calculation arithmetics. Apple had this idea in mind and worked to improve the speed of Swift. For example, Swift 2.0 has beaten C++ in several computation algorithms, such as Mandelbrot algorithm. Objective-C is slower because it contains C API legacy.

    Swift is faster than Objective-C, because it removed the limitations of C language and has been improved with the help of advanced technologies that were unavailable when C was developed. As mentioned by Apple, Swift was originally designed to operate faster.

    Despite the fact that languages are different, they both integrate, and work with Cocoa and Cocoa Touch APIs, for all Apple platforms. Therefore, a regular app-user would not recognize the difference in operating speed between Objective-C vs Swift. Speed also depends on a programmer’s level and capabilities, since a slow app can be written in Swift as well.

    Learn more here https://mlsdev.com/blog/51-7-advantages-of-using-swift-over-objective-c

    Avatar of Bessalitskykh
    Software Development Consultan at MLSDev Inc.
    Review ofSwiftSwift

    Its performance approaches the one of C++ which is considered the fastest algorithm calculation arithmetics. And Apple strives to improve the speed of Swift. Learn more here https://mlsdev.com/blog/51-7-advantages-of-using-swift-over-objective-c

    Review ofJavaScriptJavaScript

    excellent!!

    How developers use F#, JavaScript, and Swift
    Avatar of Andrew Faulkner
    Andrew Faulkner uses JavaScriptJavaScript

    Almost the entire app was written in Javascript, with JSON-based configuration and data storage. The following components were written and/or configured with Javascript:

    • Most server-side scripts, all unit tests, all build tools, etc. were driven by NodeJS.
    • ExpressJS served as the 'backend' server framework.
    • MongoDB (which stores essential JSON) was the main database.
    • MongooseJS was used as the main ORM for communicating with the database, with KnexJS used for certain edge cases.
    • MochaJS, ChaiJS, and ExpectJS were used for unit testing.
    • Frontend builds were done with Gulp and Webpack.
    • Package management was done primarily with npm - with a few exceptions that required the use of Bower (also configured with JSON).
    • "Templating" was done with Javascript dialect JSX.
    • The frontend was build primarily with ReactJS (as the View) and Redux (as the Controller / Store / frontend model).
    • Configuration was done with json files.

    The only notable exceptions were the use of SCSS (augmented by Compass) for styling, Bash for a few basic 'system chores' and CLI utilities required for development of the app (most notably git and heroku's CLI interface), and a bit of custom SQL for locations where the ORM extractions leaked (the app is DB-agnostic, but a bit of SQL was required to fill gaps in the ORMs when interfacing with Postgres).

    Avatar of OutSystems
    OutSystems uses JavaScriptJavaScript

    Read more on how to extend the OutSystems UI with Javascript here.

    OutSystems provides a very simple to use AJAX mechanism. However, developers can also use JavaScript extensively to customize how users interact with their applications, to create client side custom validations and dynamic behaviors, or even to create custom, very specific, AJAX interactions. For example, each application can have an application-wide defined JavaScript file or set of files included in resources. Page-specific JavaScript can also be defined.

    Avatar of Gorka Llona
    Gorka Llona uses JavaScriptJavaScript

    This GNU/GPL licensed Javascript library allows you to draw complex organizational charts that can't be drawn using Google's tool or equivalents. Orgchart structures are specified with JSON and can be generated on-the-fly by server-side scripts and databases. Events can be attached to clicks over the boxes. Multiple options can be defined; look at the repo for examples. This 1300-code-lines software component with contributors from 8 countries (and others for which I have to integrate their works) appears in the first page of Google Search results when searching for "Javascript Organizational Chart Library".

    Avatar of Cloudcraft
    Cloudcraft uses JavaScriptJavaScript

    JavaScript gets a bad rep, quite undeservedly so in my opinion. Today, JS is closer to functional languages than to the traditional-OO languages, and when used as such provides a great development experience. The pace of development is just picking up with transpilers like Babel making future advanced language features available to the masses today. At Cloudcraft.co, we write 100% of both the front-end (with React) and the backend (with Node.js) in Javascript, using the latest ES6 and even some ES7 features. This is not your grandfather's Javascript!

    Avatar of Lawrence Cheuk
    Lawrence Cheuk uses SwiftSwift

    iPhone app, a new born language, it may good but the IDE, xcode is bad compare with Visual Studio. It just like a baby. playground can only use without connect to other library...you can not do a simply refactor of renaming a variable. You can go to definition and find reference, but you can not go to implementation....I should write them on xcode not here basically it is not the fault of swift, but it tightly to it, unless you want to use a notepad to write it.

    Avatar of MOKA Analytics
    MOKA Analytics uses JavaScriptJavaScript

    The application front-end is written in JavaScript (ES6). We originally selected it over TypeScript because many library typings at the time were still flaky and the transpilation time was slow.

    We are now re-considering TypeScript because 1) the tooling has improved significantly, and 2) and the root cause of the majority of our front-end bugs are related to typing (despite having PropTypes).

    Avatar of Refractal
    Refractal uses SwiftSwift

    Most of our newer apps are written completely in swift, with our older ones and some special cases using a mix of Swift and Objective-C, but with Swift 2, the language is pretty much a must-use. "guard" is <3.

    Avatar of Flutter Health Inc.
    Flutter Health Inc. uses SwiftSwift

    Flutter is coded with Swift v.2.3 and can be run with Xcode v.8.2.1. To launch in Xcode 9.3, the code needs to be migrated to Swift 4.1

    Avatar of Maxim Ananov
    Maxim Ananov uses SwiftSwift

    Most of the app code was gradually rewritten in Swift for better performance and code maintenance.

    Avatar of JINJA Ltd.
    JINJA Ltd. uses SwiftSwift

    Our native iOS app is built on Swift, and most of the basic function is still written in Swift