: Here’s a list of quick-to-write algos that are often useful. TL;DR javascript Coming from a ruby background, I experienced quite some frustration while learning javascript. A lot of basic methods, like for instance , or seemed to be missing in my eyes. merge flatten uniq Then I discovered and it was cool… Until I found out that you had to look closely when running any update, at the risk of breaking things in very improbable ways (of course it happened; I let you imagine what a pleasure it is to debug your code after lodash changed a method that now does almost, but not quite, entirely unlike what it used to do. Bonus points if you didn’t even realise that lodash was updated in the first place). lodash very Few years later, things looks easier thanks to new ES6 standards and I seldomly use lodash or any other libraries for basic . Here’s a non-exhaustive of what I frequently come across when writing code. algorithms : I don’t pretend to beat lodash on efficiency or algorithm complexity. Besides, lodash is surely an awesome project. The following examples are just simple, easy-to-write pieces of code that work quickly for simple enough cases; we don’t always need the big guns. Disclaimer Oh, and also, all of the following code respect immutability principles. We never mutates the initial object, but rather return a new object that have the desired properties. Hope it can also help you ! Uniq Array The idea here is to create a from our values, and then convert it back to an array (if need be): Set Before converting back to an array, keep in mind that itself has some useful tools, such as or for instance. Set size has Update an array object by property Here we update the object that has in the array. id: 3 Remove an object from array by property Let’s remove the object that has from our array: id === 3 Remove a key from an object You can use denormalized assignment the other-way around: Merge an array of objects together With this piece of code we can either merge objects together, or update them by their properties: Flatten FromPairs Subtract two Sets Conclusion All-right, this is all for now. Don’t hesitate to send me more examples, or even to ask for new ones if you feel like I forgot some useful algos !I might very well update this list as it goes on :)
