DEV Community

loading...
Cover image for June 26th, 2020: What did you learn this week?

June 26th, 2020: What did you learn this week?

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

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.

PSA "Learn to use the Internet Level II

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

#todayilearned

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.👇👇🏻👇🏼👇🏽👇🏾👇🏿

Toddler making a fist as if to say "Yes!"

Discussion (45)

pic
Editor guide
Collapse
nksprzak profile image
Nick Kasprzak

A lot of terminal stuff it seems.

I learned that instead of using > you can use >> to concat an output to a file.

For grep I learned a bunch of options like -v (ignore case), -A (lines after), -B (lines before), -o (get just the specific searched string) and this cool one -Eo '.{0,20}a href.{0,70}' to get the amount of chars before and after an occurrence of a string, 'a href' in that case.

Learned of a type of program called terminal notifier, which notifies you when a long task like compiling finally finishes. Though I couldn't figure out how to get that to work w/ my server I SSH into.

Learned about Insomnia, alternative to Postman.

This git command, git diff -U0 HEAD~1 , which will just show you the difference and no lines before like git diff usually does. Helpful for when I pipe for a change like git diff -U0 HEAD~1 | grep crm to see if I missed a search and replace.

Lastly how to find the top 5 directories , du -hs * | sort -rh | head -5. This helped me when my VM that I use for my staging Cassandra instance got full and nothing could connect anymore. I learned where Cassandra keeps the data on the disk, /var/lib/cassandra/data

Collapse
nickytonline profile image
Collapse
etienneburdet profile image
Etienne Burdet

Realised that DE-NO is NO-DE reversed. Changed my life.

Collapse
gillarohith profile image
Rohith Gilla • Edited

Did you mean :p

"node".split("").sort().join("")
Collapse
nickytonline profile image
Collapse
dmahely profile image
Doaa Mahely

I learned about linters and started setting up ESLint for one of my repos.

Collapse
nickytonline profile image
Collapse
benpearo profile image
BenPearo

Great week for me! I set up pre commit hooks for linting and running tests for staged files, set up a Jenkins pipeline, and got docker compose running for my services. I want to write my first post/guide on one of them later this week

Collapse
psiho profile image
Mirko Vukušić • Edited

Learned how to setup all AWS resources using templates and AWS Sam. It's easier (once you get the hang of it), it can be put in source control, it can be included in build scripts, it can be launched locally. Really happy with this. Wrote a post about it too: dev.to/psiho/build-deploy-all-aws-...

Collapse
vonheikemen profile image
Heiker

I learn how to add forms to an observable notebook (it's like a coding playground) and modify their behavior. I used them to make interactive examples in here: Using the Maybe type in js

This was last week but I'm still proud I figure out how to do it.

Collapse
nickytonline profile image
Collapse
sduduzog profile image
Beautus S Gumede

I finally learned how to use docker for local development. I always pushed this aside until I needed to use postresql which is a pain to setup locally on a linux environment. So I learned how to use

WSL + Docker + Docker compose

Local development has hit a whole new level for me

Collapse
nickytonline profile image
Collapse
celyn_davis profile image
celyn

this week i learned how to block ip addresses in wordpress and implmented it on my site as well. It is an important security aspect which site owners sideline. Was required from security aspect on our blog .have also come up with a post here dev.to/celyn_davis/how-to-block-ip...

Collapse
nickytonline profile image
Collapse
premjeet profile image
PremJeet • Edited

I made a visualisation of the clustering algo ${ baby-oopsy-daisy.github.io/sketche...
Give this a look, and the most important, you feedback
(Doesn't work in firefox mobile, if you know the reason please enlighten me)
✌️🧐

Collapse
nickytonline profile image
Collapse
waylonwalker profile image
Waylon Walker

actions/cache@v2

GitHub actions cache. My gatsby site now builds in about half the time, much of which is now installing node_modules and deploy.

REGEX

I got comfortable enough with a few regex commands to use it to filter data catalogs.

Collapse
nickytonline profile image
Nick Taylor (he/him) Author

GitHub actions cache be like

The Flash running

Collapse
basuradeluis profile image
basuradeluis

I learned how to use bookmarks and Mark All/find feature in Notepad++ to select lines that contains/not contains some string in a huge log file.
winhelponline.com/blog/remove-line...
Then, I remembered I could have used grep utility instead :-)

Collapse
junlow profile image
jun

I learned about - that this simple js code
window.print();
you can print the screen 🔥

Collapse
nickytonline profile image
Collapse
kelvin9877 profile image
Kelvin Liang

I finish one article writing about React Testing and start to explore the Static Site Generator - Gatsby.js's concepts and starting guide.

Collapse
nickytonline profile image
Collapse
samuelalsn profile image
SamuelALSN

As newbies in React js , i've learned React imposible states error handling , React REDUCERS HOOKS and use of Third party library

Collapse
nickytonline profile image
Collapse
rakshakannu profile image
Raksha Kannusami

Learnt about Tree data structures. Diving into binary search trees. Will be publishing a devpost every Saturday.

Collapse
nickytonline profile image
Nick Taylor (he/him) Author

That's awesome! 🔥

Yes, that's awesome!

Collapse
gillarohith profile image
Rohith Gilla

After long procrastination and constant notifications from Notion and TickTick, I finally started to learn TypeScript 🔥
Any paths or suggestions for me to learn it are always welcomed 🙌🏻
TypeScript
P.S: Any other typescript memes are always welcomed 🚀

Collapse
macca profile image
Macauley Parry

I learned some more C#/XAML styling techniques 😁

Collapse
nickytonline profile image
Collapse
voralagas profile image
Pravin Poudel

This week i learnt about lighting in webgl and yesterday designed reaponsive navbar using flexbox.

Collapse
nickytonline profile image
Collapse
scooperdev profile image
Collapse
message profile image
i am message

Node.js, Express.js, MongoDb and the beauty of MVC architecture never felt so good and eventful in while now.

Collapse
borama profile image
Matouš Borák

I learned how partial page updates work in Hey site. Pretty cool stuff, indeed!
dev.to/borama/a-few-sneak-peeks-in...

Collapse
nickytonline profile image
Collapse
peter279k profile image
peter279k • Edited

I've learned about how to setup a Packagist mirror for composer fans in my country :).

Check this blog post.

Collapse
nickytonline profile image
Collapse
tilakmaddy_68 profile image
Tilak Madichetti

Using face-api.js ! I read the docs(I'd say they are great) and I made Try not to laugh challenge(under AI supervision)
tilakmaddy.github.io/Try-Not-To-La...

Collapse
nickytonline profile image
Collapse
wolfhoundjesse profile image
Jesse M. Holmes

I re-learned that just because a library promises zero-configuration, it isn't necessarily so, and sometimes it's easier to roll your own.

Collapse
nickytonline profile image
Nick Taylor (he/him) Author

They said zero config...

Large Jenga falling on a boy

Collapse
prashanthpprabhu profile image
Prashanth Prabhu

Upgrading to Angular 10 from 9 (which was done just a week ago). Thinking Angular should be named as Zoomgular due to speed of releases.

Collapse
nickytonline profile image