Immutable.js – Immutable Data Collections

Re:Immutable.js – Immutable Data Collections by swannodette on Saturday November 01, 2014 @07:25AM (#8542730)

Lack of update is a show stopper. In general I would expect Immutable JS to trounce anything via Object.freeze with respect to performance. Real hash maps and sets are useful to organize programs - the semantics of Object.freeze on ES6 Map and Set are unclear and still suffer from above problems. Again Immutable JS has a big advantage.

In the context of building real applications with immutable data structures and a library like React that makes them easy to integrate - many of your concerns don't apply at all.

[ Parent | on HN ]

Re:Immutable.js – Immutable Data Collections by gcanti on Saturday November 01, 2014 @08:24AM (#8542820)

> Lack of update is a show stopper

Well, it's quite easy to write something like Facebook Immutability Helpers [1]. As you correctly stated, it really depends on your own use case and performance issues.

I'll try some perf experiment with [1] or something similar to see what comes out.

[1]: http://facebook.github.io/react/docs/update.html

[ Parent | on HN ]