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October 8th, 2021: What did you learn this week?

Nick Taylor on October 08, 2021

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 picture ...
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Derek Enos • • Edited

I learned that you can use a regular expression that specifies the g flag with exec()to perform iterative matching in JavaScript :

>> const regex = /./g
>> const s = "What is happening?"
>> regex.exec(s)
Array [ "W" ]
>> regex.exec(s)
Array [ "h" ]
>> regex.exec(s)
Array [ "a" ]
>> regex.exec(s)
Array [ "t" ]
...
>> regex.exec(s)
null
>> regex.exec(s)
Array [ "W" ]
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Nick Taylor •

Nice!

Nice

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Nicky Meuleman •

I learned about concurrent vs parallel programming, what that means.
Wrote a small post with some demos about it nickymeuleman.netlify.app/garden/c...

a longer post about applying that in Rust is coming 👀

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Nick Taylor •

Awesome!

Hackerman from Kung Fury putting on a Nintendo Power glove

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Daniel Uber •

I learned you can add pretty specific comments about the source of SQL queries in a rails app by adding the marginalia gem to your project.

This makes it easier to tie specific queries or updates to the location in the code that called them:

  Profile Create (0.6ms)  INSERT INTO "profiles" ("created_at", "updated_at", "user_id") VALUES ($1, $2, $3) RETURNING "id" /*line:/app/models/user.rb:20:in `block (3 levels) in <class:User>'*/  [["created_at", "2021-10-13 16:56:31.006007"], ["updated_at", "2021-10-13 16:56:31.006007"], ["user_id", 218762]]
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Now, I can that this profile creation was triggered by code on line 20 in the User class definition...

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Nick Taylor •

Gym teacher from Glee saying amazing!

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Jessica Wilkins •

I learned more about UX design and its history because I had to write an article about it for freeCodeCamp News.

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Pontakorn Paesaeng •

Nice. I want to read it.

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Nick Taylor •

Pam from The Office saying Nice!

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Pontakorn Paesaeng •

How to use TravisCI? I learned this in class. I also learned Lit a bit.

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Nick Taylor •

Nice!

Actor from Game of Thrones saying Nice!

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Dhruvin •

I leaned Dango channel and websockets

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Nick Taylor •

Stephen Colbert saying Awesome Sauce

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Thanos Stantzouris •

Learned about Livewire Computed Properties! Now i can finally reuse all my queries in the same lifecycle without having to rerender them again and again!
🤓🤓😎

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Nick Taylor •

That's awesome! 🔥

Yes, that's awesome!