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An Animated Guide to Node.js Event Loop
Node.js doesn’t stop from running other operations because of Libuv, a C++ library responsible for the event loop and asynchronously handling tasks such as network requests, DNS resolution, file system operations, data encryption, etc.
What happens under the hood when Node.js works on tasks such as database queries? We will explore it by following this piece of code step by step.
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Top comments (126)
Vue! Started to play around with it yesterday :D
Only to a beginner level but I had a crack at Vue recently and - as my first attempt at using a framework - was pleasantly surprised! How're you finding it?
This post from @aspittel is amazing for learning Vue!
A Complete Beginner's Guide to Vue
It’s a great one for sure :)
I'm liking it. It's certainly fast to get up and running/start to use.
I will still never be a fan of functions that start with $, it seems unreadable. I'm more likely to use the mounted function instead of $mount as I result.
I really like how lightweight the configuration is. And it feels pretty intuitive without a lot of extra context/bloat to understand.
I bet you hated Jquery.
Haha, I accepted it! But I like the direction things are moving in terms of readability.
Yay, it's quick to get going, but it's also quite powerful as you dig in further.
How do you feel about single file components? I think that's the best thing coupled with the scoped css.
I’m amenable to both!
Golang! I started to read a few books on O'Reilly, but haven't coded in it yet
Just going to leave this here...
Well well well, don't mind if I do
I'm finishing The Go Programming Language, a bit dense sometimes, but a good must have.
GraphQL. The hype makes me wanna join in, but I just don't feel like I need it yet. I guess I just haven't worked on any project large enough to warrant it
A fun experiment to try it out is to find a public REST API, ideally something that can be modeled with some sort of type system (my recommendation: the PokéAPI), run some queries to get familiar with it, then build a GraphQL layer in front of it. Gets you familiarized with GraphQL types and resolvers and such. There's a slight learning curve at the beginning, but it's not bad, and it's a very nice interface to query once it's set up!
Awesome suggestion. I'll definitely try this out
If you want a really clean way to play around with GraphQL make a Gatsby project and throw in some kind of static content.
When you spin up the project for development it generates an additional localhost endpoint that consists of a stand alone GraphQL playground (think postman for REST).
A Gatsby + GraphQL combo is exactly what I had in mind when thinking of learning graphQL :D
I would personally suggest you to start with a crud project involving authentication and authorisation. Covers pretty much the basic necessities for a base.
You could try creating a standalone GraphQL API instead of a RESTful one. One of the jobs I did the only thing Express was doing was running Apollo server, everything else was pure GraphQL API.
Elixir with Poenix framework, didn't have time to first impressions yet, but its seems that the active record(ecto) is a bit hard to get used with.
I liked ecto a lot when I first started using it, because its API is very explicit i was able to pick it up quickly, especially compared to activerecord.
Great to know, I'm comming from python/Django, hope I have the same feeling that you had.
Rust. Been seeing lots of hype about it lately and started reading up and going through the getting started stuff.
Rust is a very complicated language to learn and also so worth it. After going through their tutorial (which is the best language tutorial I’ve ever encountered), it is my favorite programming language.
I've also considered starting Rust soon, been going through their tutorials. What I love most about it is how well documented and thought out it seems to be
Not so new, but Ruby. I understand it's a really clean-feeling language. But I'm worried JS/TS will leave it behind.
Don't see Ruby disappearing anytime soon so learn away!
Ansible. I never want to set up my computer again.
I basically want to install all my dependencies, hook up my github, download my repos and dot files, run updates, build all the project docker images, and have everything good to go. I know normally Ansible is for setting up server clusters though.
If anyone has any better ideas to set up a local dev machine I'm all ears though! I basically want a package manager file for
aptin the vein of
composer.jsonI guess, with a few scripts to be ran after dependencies are installed.
Also I guess I'll write a simple bash script to download and run the ansible stuff eh? :P Or alternatively can I use docker to set up my actual computer? Tough life...
i suggest you go the Docker route : Ansible comes after basic system needs.
Those basic system needs are simple (since you use composer i'm assuming PHP) :
These can be quickly set up via a docker-compose file and started/stopped easily (once every config is done)
Ansible at the moment will only add a layer of complexity that, i think, you don't need at first.
All packages are configured/set up through the dockerfile(s) once and if needed you can enter a bash/sh console on each container.
I recommend you start with the more "complete" images (they have everything needed system wise) and then go for smaller images that fits your needs later for less memory/more performance.
I get what you mean there, but I'm not talking about setting up deployment servers. I'm talking about setting up my local environment. Like I buy a new computer or wipe my hard drive or something and want to get up and running again. Things like installing my IDEs, setting up my
.bashrc, installing things like spotify or slack, and other utilities like gedit or 'bat' or 'exa'.
For the projects I will use docker for sure. I don't think I can set up my local machine using docker though can I?
Also if not, I actually decided to go the Ansible route so far and have it almost working already. Just having some ppa issues and also an issue with snaps on crostini that it was too late to try and fix when I encountered it last night.
you're right Docker means containers not your host machine so its only use, for your needs is the environment for code.
Setting up your OS is another topic and i believe there (probably) are tools to customize the distro you are using.
BUT going with Ansible for that is a good idea :)
Writing different automation scripts with it. It's pretty cool and interesting how easy I can make something to work the way I want it. I was trying to do the same thing with Node but boy I'm just not succeeding!
My current work has nothing to do with these technologies at the moment, but I am preparing myself for a career change 😏
Python's a lovely language :)
This actually makes a lot of sense.
Thanks for the feedback!
Why Every Programmer Should Learn Python
Python. Picked up a Raspberry Pi and can see it being a great opportunity to start learning it.
I spent a summer learning x86 assembly in three separate courses. I did this while playing Dragons Dogma, I would pause the game - do a section | chapter of the courseware - and keep playing as a reward for my advances in the course. I was learning it for understanding the utilization and modification of shellcode better. It didn't work. Dragons Dogma was great though.
Vue: I have been mostly focused on backend (PHP/Laravel) but want to spend some time in learning more frontend frameworks.
Kotlin: I am an Android dev but unfortunately I have not been able to work in Kotlin yet, for the last 2 years I have worked mostly on big legacy applications that are written in Java.
Judging from the direction Android dev is going I'd prioritize Kotlin, you can also contribute to the newly released DEV Android app in the meantime 😂
Very true! I hope to be able to help a lot in the future development of the DEV Android app.
So many interesting things to learn everywhere 😂 hard to prioritise, Kotlin, Vue, tailwindCSS, SASS, ... Lol the list can go on. But for sure will try to focus on Kotlin.
Ahahah the infamous "stuff to learn" list
And to that point, it may be worth looking at Google’s own Flutter which they are pushing in very hard. Haven’t decided how I feel about Dart yet, but it’s very familiar and easy to pick up.
It’s very easy to mix in Kotlin to existing Java code bases! I’ve done it several times now in Android apps and I’m far from an expert Android dev.
Elixir. Started reading a book two days ago after a long phone talk with a friend. I asked him for a nice language to learn for back-end development. He's currently working with elixir so he gave me very nice points.
The thing is, reading the book I felt like few years ago when I tried to do a hello word in brainfuck.
So, after a few pages, put the book in the shelves and I'm continuing learning Go. And good thing I've been learning how to benchmark functions in Go!
Agda. Dependently-typed languages are the future of programming, IMO. And Agda has the most compelling feature set - even Cubical Type Theory mode. Even TypeScript has bit of type-level fun. But it's hard to come up with a good project idea that will expose best parts of each language.
React plus Python 🐍 I always get a start but can’t find the time to go in depth
That's a lot! React and Python both bring with themselves a lot of stuff to learn, doing them together might be quite a feat 😂
Indeed I think I will stick with React for now as a JS guy this has the most direct impact. There were just a nice deal on a Mosh Hamedani course on Python that was hard to resist 😂
No no be in all the lanes, just take it easy 😂😂
I wish indeed 😉 Bandwidth is hard to come by these days. But in reality I’m very proficient with Angular and I want to work my way up that way with React . Python would be more of a hobby at this point something to learn with my kid during her school vacation.
That would be lovely indeed!