ramda VS mori

JavaScript is great for point-free programming! Make sure you check out Ramda.js https://ramdajs.com/

It’s fun in the sense that solving a puzzle is fun, but I avoid it for anything I need to maintain long-term.

But it’s good practice for understanding combinators which is useful for some kinds of problems.

This is very cool. I remember I got sucked into things like Ramda going down this functional programming rabbit hole :-)

https://ramdajs.com/

To create our pipeline, I'm going to use the pipe function from the NodeJS ramda library instead of building my own.

Other libraries to check out are pratica and ramda

I recently took ownership of the new types/ramda repo. This repo is re-exported by @types/ramda and is the first step to bringing type definitions for ramda in-house. We're already hard at work correcting major issues, adding full currying support, and general bug fixes

I'm going to be honest. You probably don't need to use currying in JavaScript. In fact, trying to fit it in your code is going to do more harm than good, unless it's just for fun. Currying only becomes useful when you fully embrace functional programming, which, in JavaScript, means using a library like Ramda instead of the standard built-in functions.

Lodash gets so many things wrong I’d rather not see it in most projects. I appreciate a good utility library for JS projects but my go-to choice has to be Ramda[1]. Every function it exports is curried and works great with pipe which enables me to write highly reusable and composable functions in pointfree notation. I have never been as productive with lodash, and I find the functional style easier to read

[1] https://ramdajs.com/

Do note though that ramda is different from rambda. 👍 (Granted they are very similar!)

immutable-js or mori for immutable data structures

Use persistent immutable data structures (as implemented in, for instance, mori or Immutable.js) to represent the state. As much as possible, push calculations into referentially transparent functions (i.e., input depends purely on output) which take persistent data. Write the interactions with the real world in imperative style.

Mori

Always make immutable variables. You can achieve this by having a persistence data structure using Mori or immutable.js libraries to open the features such as linked list, trees, path dealing to help with efficiency. I will not be covering how to create a persistence data structure using those libraries as it’s not the scope of this post.