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

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.


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

#todayilearned Follow

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.👇👇🏻👇🏼👇🏽👇🏾👇🏿

What was your win this week?

Gracie Gregory (she/her) ・ Jun 26 '20

#discuss #weeklyretro


Comments

[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.

[Nick Taylor]

Noice!

[peter279k]

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

Check this blog post.

[Nick Taylor]

👍

[Sdu]

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

[Nick Taylor]

Nice!

[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

[Nick Taylor]

Awesome!

[Doaa Mahely]

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

[Nick Taylor]

Nice!

[Raksha Kannusami]

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

[Nick Taylor]

That's awesome! 🔥

[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...

[Nick Taylor]

[Etienne Burdet]

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

[Nick Taylor]

[Rohith Gilla]

Did you mean :p

"node".split("").sort().join("")

[PremJeet]

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)
✌️🧐

[Nick Taylor]

[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.

[Nick Taylor]

They said zero config...