DEV Community

Cover image for Mar. 13, 2020: What did you learn this week?

Mar. 13, 2020: What did you learn this week?

nickytonline profile image Nick Taylor (he/him) ・1 min read

Happy Pi Day one day early awesome community members!

It's that time of the week again. So wonderful devs, what did you learn this week? It could be programming tips, career advice etc.

A comic sloth riding a flying book saying "Knowledge is powah!"

Feel free to comment with what you learnt and/or reference your TIL post to give it some more exposure.


Summarize a concept that is new to you.

And remember, if something you learnt was a big win for you, then you know where to drop it as well.πŸ‘‡πŸ‘‡πŸ»πŸ‘‡πŸΌπŸ‘‡πŸ½πŸ‘‡πŸΎπŸ‘‡πŸΏ

A show host dancing a winning dance in their seat

Discussion (27)

Editor guide
sargalias profile image
Spyros Argalias

Service workers. A little bit complicated with their 3 step lifecycle, but fairly nifty. Mostly from the Google developers service workers primer

scrabill profile image
Shannon Crabill

Service workers are fun! Tricky, yes, but fun!

lennythedev profile image
Lenmor Ld

Finally succeeded doing an interactive rebase! I used to just trash a branch and create a new one. This time I actually read and understand how it works.
Nice article:

nickytonline profile image
Nick Taylor (he/him) Author

Nice Lenny! Hope all is well! Say hi to the Shotgun peeps for me! πŸ‘‹

matteobruni profile image
Matteo Bruni • Edited

A lot on HTML 5 canvas and javascript. How to uncover an object under a canvas or how to rotate the objects correctly.
These are the samples of what I'm talking about πŸ’ͺ:

ben profile image
metalmikester profile image
Michel Renaud

Well, it's kind of weird saying that but I've been working with JavaScript for a while and yesterday I had to write a class. I had actually never written one in JS, mostly doing functional programming. The task at hand just felt more natural using a class.

So I learned about the intricacies of class variables, properties and methods. I got a lot of "unexpected..." or "undefined..." errors until I got the syntax right. That first JS class tutorial I looked at had a lot of errors in it. lol

I also found that I had to be careful about the syntax of a callback passed to findIndex (for arrays). I wasn't getting any error but always got a -1 result until I found that the syntax there was... hmmm... a bit simpler than what I've been doing for things like event listeners.

All frustrating at first, but in the end it all worked and it's a win. :)

emma profile image
Emma Goto πŸ™

I updated the social card generator on my gatsby blog website so that two separate images would be automatically generated - one each for Twitter and DEV (since they have different dimensions). I also made so that you could pass in an image URL and it would use it as the background:

I followed this tutorial here if anyone else is interested in adding it to their gatsby site!

nickytonline profile image
naimlatifi5 profile image
Naim Latifi

Learnt Wepack and how does it work

ravishkr13 profile image
Ravish kumar

I just started in a new company this week. I have just transitioned from functional business analysis to data analytics and data warehousing. I am just learning how the data is structured and starting a new project in Python, SQL and Airflow with BigQuery.

nickytonline profile image
Nick Taylor (he/him) Author

Awesome! Sounds like it would make for a great post on DEV. πŸ˜‰

sumitkharche profile image
Sumit Kharche

This week I learned Pure components in react and wrote below article about the same.

Also spend some time on Azure functions.
yuanhao profile image
YuanHao Chiang • Edited

Ruby on Rails! Decided to take the plunge and start taking the BE stack we use seriously this year. πŸ’ͺπŸ’ͺ

mjstelly profile image
Michael Stelly

I learned...

  1. a little bit more about python for machine learning through Kaggle's mini-courses.
  2. that I'm quite fortunate that my work allows me to work from home 100%.
  3. that my soft skills need a great deal of improvement.
  4. the critical importance of reading classic literature. You would be amazed at how relevant are the writings of Plato, Suetonius, and Nietsche to modern society. I was.
  5. that freelancing is a job in itself apart from the actual billable work.
clifton893 profile image
Clifton Long Jr.

Typography! Some really great study on design theory, a professional mindset to typeface selection, and pairings.

And Sketch! I know Figma is where design is trending, but Sketch seems like a perfect starting point.

madza profile image
Madza • Edited

Some object-oriented design patterns, by browsing Github open source :)

voralagas profile image
Pravin Poudel

I wrote two article on javascript that is available on my profile. Tried to learn new programming language RUST but left it with lack of fire πŸ”₯πŸ”₯πŸ”₯πŸ”₯

voralagas profile image
Pravin Poudel

Article on Closure in Javascript

Article on Super() in React and JS

nickytonline profile image
Nick Taylor (he/him) Author

Feel free to drop the links to your posts in the comments. πŸ˜‰

abhay676 profile image
Abhay Goswami
  • Work with docker first time
  • AWS cognito
  • Jenkins pipelines
voralagas profile image
Pravin Poudel

This work I worked on to write two articles on Javascript.


I tried to learn RUST and write some code in RUST along with writing articles in RUST.

mehdifathi profile image
Mehdi Fathi

I learnt a little regex.

vaibhavkhulbe profile image
Vaibhav Khulbe

I got to know more about React/Redux by reading some of the questions listed in this repo.

memitaru profile image
Ami Scott (they/them)

I learned what a hash map was and why they are good! I've been struggling through learning about data structures but this was an interesting section.

athulmuralidhar profile image
Athul Muralidhar

Big query and its nice command line interface. How to use Google's APIs to write and read from them

samuelsorial profile image
Samuel Sorial

I learned more about I/O in Java, also about JavaFX.