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Immutable.js

161
108
+ 1
17
Underscore

1.6K
574
+ 1
290
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Immutable.js vs Underscore: What are the differences?

Developers describe Immutable.js as "Immutable persistent data collections for Javascript which increase efficiency and simplicity, by Facebook". Immutable provides Persistent Immutable List, Stack, Map, OrderedMap, Set, OrderedSet and Record. They are highly efficient on modern JavaScript VMs by using structural sharing via hash maps tries and vector tries as popularized by Clojure and Scala, minimizing the need to copy or cache data. On the other hand, Underscore is detailed as "JavaScript's utility _ belt". A JavaScript library that provides a whole mess of useful functional programming helpers without extending any built-in objects.

Immutable.js and Underscore can be primarily classified as "Javascript Utilities & Libraries" tools.

"Immutable data structures" is the top reason why over 6 developers like Immutable.js, while over 83 developers mention "Utility" as the leading cause for choosing Underscore.

Immutable.js and Underscore are both open source tools. Immutable.js with 27.6K GitHub stars and 1.6K forks on GitHub appears to be more popular than Underscore with 24.6K GitHub stars and 5.41K GitHub forks.

Pinterest, LinkedIn, and Coursera are some of the popular companies that use Underscore, whereas Immutable.js is used by Instagram, Rove.me, and Broadly. Underscore has a broader approval, being mentioned in 1047 company stacks & 76 developers stacks; compared to Immutable.js, which is listed in 20 company stacks and 11 developer stacks.

Decisions about Immutable.js and Underscore

Fast Healthcare Interoperability Resources (FHIR) provides standard data objects in JSON format for the healthcare industry. Since JSON objects are hierarchical and tree-like, we had a need to defensively 'pluck' fields from our JSON objects and do lots of mapping. We tried jQuery and Underscore and a few other technologies like FHIRPath; but Lodash has been the most well supported, works in the most contexts, has the cleanest syntax, etc. We particularly like the ES6 version of Lodash, where we can import the method names directly, without resorting to * or _ syntax. We got hooked on the 'get' function to defensively pluck fields from objects without crashing our user interface, and have found countless uses for the other lodash functions throughout our apps. Lodash is great for developing and optimizing algorithms.

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Pros of Immutable.js
Pros of Underscore
  • 8
    Immutable data structures
  • 5
    Allows you to mimic functional programming
  • 2
    Bring the functional experience to JS
  • 1
    Makes writing Javascript less scary
  • 1
    Easily transpiles to different ES standards
  • 85
    Utility
  • 55
    Simple
  • 40
    Functional programming
  • 32
    Fast
  • 28
    Open source
  • 20
    Backbone
  • 16
    Javascript
  • 8
    Annotated source code
  • 6
    Library

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What is Immutable.js?

Immutable provides Persistent Immutable List, Stack, Map, OrderedMap, Set, OrderedSet and Record. They are highly efficient on modern JavaScript VMs by using structural sharing via hash maps tries and vector tries as popularized by Clojure and Scala, minimizing the need to copy or cache data.

What is Underscore?

A JavaScript library that provides a whole mess of useful functional programming helpers without extending any built-in objects.

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What companies use Immutable.js?
What companies use Underscore?
See which teams inside your own company are using Immutable.js or Underscore.
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What tools integrate with Immutable.js?
What tools integrate with Underscore?
    No integrations found

    Blog Posts

    What are some alternatives to Immutable.js and Underscore?
    Lodash
    A JavaScript utility library delivering consistency, modularity, performance, & extras. It provides utility functions for common programming tasks using the functional programming paradigm.
    Ramda
    It emphasizes a purer functional style. Immutability and side-effect free functions are at the heart of its design philosophy. This can help you get the job done with simple, elegant code.
    Modernizr
    It’s a collection of superfast tests or detects as we like to call them which run as your web page loads, then you can use the results to tailor the experience to the user. It tells you what HTML, CSS and JavaScript features the user’s browser has to offer.
    Modernizr
    It’s a collection of superfast tests or detects as we like to call them which run as your web page loads, then you can use the results to tailor the experience to the user. It tells you what HTML, CSS and JavaScript features the user’s browser has to offer.
    fancybox
    It is a tool that offers a nice and elegant way to add zooming functionality for images, html content and multi-media on your webpages. It is built on the top of the popular JavaScript framework jQuery and is both easy to implement and a snap to customize.
    See all alternatives
    How developers use Immutable.js and Underscore
    Nicholas Alexander uses
    Underscore

    Making functional Javascript more concise and efficient (prefer more recent similar library, lodash).

    webkul uses
    Underscore

    It is a JavaScript Library and used for client site application.

    papaver uses
    Underscore

    first library i setup when working with javascript. period.

    douglasresende uses
    Underscore

    I use with Backbone.js and Marionette.js

    InstaGIS uses
    Underscore

    Truth is we use lodash