Software Alternatives, Accelerators & Startups

ReasonML VS Pyjs

Compare ReasonML VS Pyjs and see what are their differences

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ReasonML logo ReasonML

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

Pyjs logo Pyjs

pyjs is a Rich Internet Application (RIA) Development Platform for both Web and Desktop.
  • ReasonML Landing page
    Landing page //
    2021-09-20
  • Pyjs Landing page
    Landing page //
    2019-09-07

ReasonML features and specs

  • Type Safety
    ReasonML offers strong type inference and static type checking, which helps catch errors at compile time rather than at runtime, leading to more reliable code.
  • Compiled to Efficient JavaScript
    ReasonML can compile to highly efficient JavaScript through the BuckleScript backend, allowing developers to build performant web applications.
  • Interoperability
    ReasonML is designed to interoperate smoothly with JavaScript, which means you can incorporate it into existing JavaScript codebases without major restructuring.
  • OCaml Ecosystem
    ReasonML is built on top of the OCaml language, allowing developers to leverage the robust OCaml ecosystem, tools, and libraries.
  • Familiar Syntax
    ReasonML provides a syntax that is more familiar and approachable to JavaScript developers, making it easier to adopt and learn.

Possible disadvantages of ReasonML

  • Steep Learning Curve
    For developers not familiar with functional programming or OCaml, ReasonML can present a steep learning curve due to its paradigmatic differences from JavaScript.
  • Smaller Community
    ReasonML has a comparatively smaller community compared to other languages and frameworks, which might make finding resources or getting support more challenging.
  • Limited Libraries
    While it benefits from the OCaml ecosystem, the specific set of libraries and resources for ReasonML is still limited compared to JavaScript and its numerous frameworks.
  • Complex Tooling
    Setting up ReasonML projects can be complex due to its tooling and build systems, which might require more time to configure and understand.
  • Evolving Language
    ReasonML and its ecosystem are still evolving, with changes and updates that might require developers to frequently adapt their codebases.

Pyjs features and specs

  • Cross-platform Compatibility
    Pyjs allows developers to write a single web application codebase in Python, which can then be compiled into JavaScript. This cross-compilation means the application can run on any device with a web browser, enhancing its reach.
  • Python Syntax
    Developers familiar with Python can leverage their existing knowledge to write web applications without learning JavaScript. This can lead to faster development times and reduced learning curves.
  • Rich Widget Set
    Pyjs offers a rich set of pre-built widgets that can be used to create complex user interfaces easily. This helps in speeding up the development process and ensures consistency across the application.
  • Client-side Execution
    By compiling Python code to JavaScript, Pyjs enables client-side execution of applications, potentially reducing server load and improving user experience through quicker interactions.

Possible disadvantages of Pyjs

  • Performance Overhead
    The extra layer introduced by compiling Python to JavaScript can lead to performance issues, especially for larger applications, as JavaScript is inherently faster and more optimized for web environments.
  • Limited Ecosystem
    Compared to more mature frameworks and libraries in the JavaScript ecosystem, Pyjs has a smaller community and fewer resources available, which can pose challenges in terms of finding support and third-party integrations.
  • Debugging Complexity
    Debugging can become complex as developers must understand both the Python source code and the resulting JavaScript output, making it harder to trace and resolve issues.
  • Stagnant Development
    Pyjs has not seen active development or community engagement compared to other frameworks, which could impact its long-term viability and the availability of updates or security patches.

Analysis of ReasonML

Overall verdict

  • ReasonML is particularly well-regarded for its ability to bring the power of OCaml to the JavaScript ecosystem, making it good for developers who need strong type safety and functional programming paradigms. It is well-suited for those who appreciate type inference and immutability.

Why this product is good

  • ReasonML is a syntax extension and toolchain for OCaml, aimed at making the language more approachable while retaining its functional programming strengths. It offers strong type inference, immutability, and robust module systems. It also integrates seamlessly with JavaScript through BuckleScript, making it a great choice for web developers looking to leverage functional programming concepts in their applications.

Recommended for

  • Developers interested in functional programming
  • Teams working extensively with both OCaml and JavaScript
  • Web developers seeking a type-safe language that compiles to JavaScript
  • Those looking for an alternative to TypeScript with strong typing capabilities

ReasonML videos

ReasonML for Skeptics || Eric Schaefer

More videos:

  • Review - Ken Wheeler - ReasonML is Serious Business
  • Review - Gage Peterson - Why your ReasonML Evangelism isn't working | ReasonConf 2019

Pyjs videos

No Pyjs videos yet. You could help us improve this page by suggesting one.

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Category Popularity

0-100% (relative to ReasonML and Pyjs)
Personal Finance
100 100%
0% 0
Generic Programming Language
Financial Planner
100 100%
0% 0
Programming Language
81 81%
19% 19

User comments

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Social recommendations and mentions

Based on our record, ReasonML seems to be a lot more popular than Pyjs. While we know about 41 links to ReasonML, we've tracked only 1 mention of Pyjs. 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.

ReasonML mentions (41)

  • Gleam is my new obsession
    Reason (https://reasonml.github.io/) is the JS like syntax for OCaml. - Source: Hacker News / 11 months ago
  • A 10x Faster TypeScript
    OCaml and Haskell already have that nice type system (and even more nice). If OCaml's syntax bothers you, there is Reason [1] which is a different frontend to the same compiler suite. Also in this space is Gleam [2] which targets Erlang / OTP, if high concurrency and fault tolerance is your cup of tea. [1]: https://reasonml.github.io/ [2]: https://gleam.run/. - Source: Hacker News / over 1 year ago
  • Ask HN: What less-popular systems programming language are you using?
    > The syntax is also not very friendly IMO. Very true. There's an alternate syntax for OCaml called "ReasonML" that looks much more, uh, reasonable: https://reasonml.github.io/. - Source: Hacker News / over 1 year ago
  • An Ode to TypeScript Enums
    When I see this it makes me want to run for ReasonML/ReScript/Elm/PureScript. Sum types (without payloads on the instances they are effectively enums) should not require a evening filling ceremonial dance event to define. https://reasonml.github.io/ https://rescript-lang.org/ https://elm-lang.org/ https://www.purescript.org/ (any I forgot?) It's nice that TS is a strict super set of JS... But that's about the only... - Source: Hacker News / over 1 year ago
  • How Jane Street accidentally built a better build system for OCaml
    Https://ocaml.org/docs/toplevel-introduction#loading-libraries-in-utop https://reasonml.github.io/ looks cool, OCaml with javascript. - Source: Hacker News / over 1 year ago
View more

Pyjs mentions (1)

  • How to actually use python code in browser or application?
    I have a Python program that takes user input from the console and shows some results on the console, and I want the user to be able to type stuff into it instead of pre-recorded runs. How do I do that? I'm not really sure. You could have a copy of Python running on the server and have the front-end communicating with it, but you'd have to be sure it's secured -- there are a lot of dangerous Python commands... Source: almost 5 years ago

What are some alternatives?

When comparing ReasonML and Pyjs, you can also consider the following products

Mint - Free personal finance software to assist you to manage your money, financial planning, and budget planning tools. Achieve your financial goals with Mint.

Transcrypt - Transcrypt is a Python to JavaScript transpiler.

Elm - A type inferred, functional reactive language that compiles to HTML, CSS, and JavaScript

Brython - Brython's goal is to replace Javascript with Python, as the scripting language for web browsers.

Haste - Decreases ping in video games.

JavaScript - Lightweight, interpreted, object-oriented language with first-class functions