Software Alternatives, Accelerators & Startups

Clojure VS Scala.js

Compare Clojure VS Scala.js and see what are their differences

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Clojure logo Clojure

Clojure is a dynamic, general-purpose programming language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming.

Scala.js logo Scala.js

Build robust front-end web applications in Scala with Scala.js
  • Clojure Landing page
    Landing page //
    2023-09-19

We recommend LibHunt Clojure for discovery and comparisons of trending Clojure projects.

  • Scala.js Landing page
    Landing page //
    2023-06-23

Clojure features and specs

  • Functional Programming Paradigm
    Clojure emphasizes immutability and first-class functions, which can lead to more predictable and maintainable code.
  • Interoperability with Java
    Clojure runs on the JVM, allowing seamless integration with the vast ecosystem of Java libraries and tools.
  • REPL Driven Development
    Clojure's Read-Eval-Print Loop (REPL) allows for interactive programming, making it easier to test and debug code in real time.
  • Concise Syntax
    Clojure's syntax is minimalistic and expressive, which can lead to more concise and readable code.
  • Concurrency Support
    Clojure provides strong support for concurrent programming with features like Software Transactional Memory (STM) and immutable data structures.

Possible disadvantages of Clojure

  • Steep Learning Curve
    The functional programming paradigm and Lisp-like syntax can be challenging for newcomers, particularly those from imperative programming backgrounds.
  • Performance Overhead
    Clojure's emphasis on immutability can introduce performance overhead compared to languages that use mutable data structures.
  • Limited Tooling
    While improving, the ecosystem for Clojure is not as mature as for some other mainstream languages, which can pose challenges in finding robust development and debugging tools.
  • Less Mainstream
    Clojure is not as commonly used as languages like Python or Java, which can make it harder to find experienced developers or community support.
  • Verbose Error Messages
    Error messages in Clojure can sometimes be verbose and difficult to understand, which can complicate the debugging process.

Scala.js features and specs

  • Strong Type System
    Scala.js brings Scala’s powerful type system to JavaScript development, reducing runtime errors and enhancing code reliability and safety.
  • Interoperability with JavaScript
    Seamlessly interoperates with JavaScript libraries and frameworks, allowing developers to utilize existing JavaScript tools and APIs.
  • Code Reusability
    Facilitates code sharing between server and client-side codebases when using Scala on both ends, increasing productivity and maintainability.
  • Functional Programming
    Supports functional programming paradigms which can lead to more concise and expressive code compared to traditional JavaScript.
  • Ecosystem
    Access to a wide range of Scala libraries thanks to the ability to use JVM-based libraries, enhanced by the 'Scala.js-specific libraries'.

Possible disadvantages of Scala.js

  • Build Complexity
    Requires a more complex build setup compared to vanilla JavaScript projects, introducing a learning curve for new developers.
  • Performance Overhead
    The additional abstraction layer can sometimes result in performance overhead when compared to native JavaScript.
  • Community and Support
    Smaller community compared to JavaScript, which can result in fewer resources, tutorials, and community support for problem-solving.
  • Learning Curve
    Developers need to learn Scala, which might be difficult for those not familiar with functional programming and type safety concepts.
  • Tooling Limitations
    Though improving, tooling support, especially for debugging in a pure Scala.js environment, might not be as robust as native JavaScript tools.

Clojure videos

What is the business value of Clojure?

More videos:

  • Review - Blog in Clojure Code Review
  • Review - Clojure Web App Code Review

Scala.js videos

Deriving the Frontend — Form Combinator Fun with Scala.js

More videos:

  • Review - Laminar – Smooth UI Development with Scala.js

Category Popularity

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Programming Language
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Personal Finance
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100% 100
OOP
100 100%
0% 0
Financial Planner
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User comments

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Social recommendations and mentions

Based on our record, Clojure seems to be more popular. It has been mentiond 39 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Clojure mentions (39)

  • Create a Server Driven CLI from your REST API
    Another project of mine Bob can be seen as an example of spec-first design. All its tooling follow that idea and its CLI inspired Climate. A lot of Bob uses Clojure a language that I cherish and who's ideas make me think better in every other place too. - Source: dev.to / 3 months ago
  • Scheming About Clojure
    Clojure is a LISP for the Java Virtual Machine (JVM). As a schemer, I wondered if I should give Clojure a go professionally. After all, I enjoy Rich Hickey's talks and even Uncle Bob is a Clojure fan. So I considered strength and weaknesses from my point of view:. - Source: dev.to / 6 months ago
  • Moving your bugs forward in time
    ‍For the rest of this post I’ll list off some more tactical examples of things that you can do towards this goal. Savvy readers will note that these are not novel ideas of my own, and in fact a lot of the things on this list are popular core features in modern languages such as Kotlin, Rust, and Clojure. Kotlin, in particular, has done an amazing job of emphasizing these best practices while still being an... - Source: dev.to / about 1 year ago
  • Let's write a simple microservice in Clojure
    This article will explain how to write a simple service in Clojure. The sweet spot of making applications in Clojure is that you can expressively use an entire rich Java ecosystem. Less code, less boilerplate: it is possible to achieve more with less. In this example, I use most of the libraries from the Java world; everything else is a thin Clojure wrapper around Java libraries. - Source: dev.to / about 1 year ago
  • A new F# compiler feature: graph-based type-checking
    I have a tangential question that is related to this cool new feature. Warning: the question I ask comes from a part of my brain that is currently melted due to heavy thinking. Context: I write a fair amount of Clojure, and in Lisps the code itself is a tree. Just like this F# parallel graph type-checker. In Lisps, one would use Macros to perform compile-time computation to accomplish something like this, I think.... - Source: Hacker News / over 1 year ago
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Scala.js mentions (0)

We have not tracked any mentions of Scala.js yet. Tracking of Scala.js recommendations started around Mar 2021.

What are some alternatives?

When comparing Clojure and Scala.js, you can also consider the following products

Elixir - Dynamic, functional language designed for building scalable and maintainable applications

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Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.

ReasonML - ReasonML is a new face to OCaml that--when coupled with BuckleScript--makes web development easy...

Rust - A safe, concurrent, practical language

Haste - Decreases ping in video games.