October 14th, 2021: 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.

Photo by Mikołaj on Unsplash

Comments

[Jason F]

This week I learned about an awesome package called yalc which has helped make testing an npm package I'm writing a bit easier. Essentially what yalc does is creates a local repo for the npm package you're developing and allows you to "install" it in to another project on your machine. This is easier than trying to troubleshoot symlinks, or dealing with ng pack and .tgz files. I'll write an article on it here in the next few days.

[Nick Taylor]

[K]

Learned a bit more smart contract development.

One moment of insight was: HTTP-gateway providers (Cloudflare, QuickNode, etc) to access a blockchain from a browser are used when no wallet extension is available in the client.

I had the impression they're always used, which was false.

[Nick Taylor]

TIL!

[K]

Code that illuminated me:

   window.addEventListener("load", async () => {
      // Modern dapp browsers...
      if (window.ethereum) {
        const web3 = new Web3(window.ethereum)
        try {
          // Request account access if needed
          await window.ethereum.enable()
          // Acccounts now exposed
          resolve(web3)
        } catch (error) {
          reject(error)
        }
      }
      // Legacy dapp browsers...
      else if (window.web3) {
        // Use Mist/MetaMask's provider.
        const web3 = window.web3
        console.log("Injected web3 detected.")
        resolve(web3)
      }
      // Fallback to localhost; use dev console port by default...
      else {
        const provider = new Web3.providers.HttpProvider(
          "localhost:8545"
        )
        const web3 = new Web3(provider)
        console.log("No web3 instance injected, using Local web3.")
        resolve(web3)
      }
    })

In that case a local gateway is used, probably either for development purposes, or even a wallet that starts such a gateway server locally, but doesn't directly connect with the browser via an extension (like in the first case).

[Amrin]

Last week i planned to build my blog in MERN stack.
Things i learned is
1. make the scope of the project as much as you can handle.
2. start bulding as first as possible.
3. don't waste time watching video courses :)

the resoult i got is a blog backend in in node js. couldn't learn React so used ejs to write the html :)

I gotta write an TIL article too LOL :)

[Nick Taylor]

[Keff]

I learned that people confuse opinions with facts.

[Nick Taylor]

[Keff]

great reaction, keep your distance lol!!!

[Goran Kortjie]

I learned about the many database services out there, SQL, MySQL, MariaDB, Cassandra, PostgreSQL etc...and there different use cases. Finally seeing how important it is to design your database structure and the importance of choosing the correct database service.

[Nick Taylor]

Nice!

[Maddy]

This week I've learned about:

1. Api-testing.
2. Search Engine Optimization (for content writing).
3. Found out about 429 status code (I accidentally came across this error when testing an endpoint on Postman 😆).

[Nick Taylor]

[Ben Halpern]

I learned a little bit about parsing Rails erb files when putting this PR together.

Add bin script to find untranslated text in erb files #15072

benhalpern posted on Oct 13, 2021

What type of PR is this? (check all applicable)

• [x] Dev tool

Description

In hunting down all text that needs translation, I thought this tool might help!

Related Tickets & Documents

github.com/forem/forem/issues/14888

If we merge this, I'll add this to the issue, and socialize this to the contributor community. From a documentation perspective, this seems most relevant because this will be most useful during this stage in the project.

View on GitHub

[Nick Taylor]

Nice!

[Greaby]

This week I learned how to use Github actions to automaticaly update my latest blog posts using gautamkrishnar/blog-post-workflow

[Nick Taylor]

[Hrishi Mittal]

I started doing the CryptoZombies course to learn Solidity. It's quite fun!

[Lucia Cerchie]

my co-worker taught me another way to hack alpinejs to make an easy "form"!

[Nick Taylor]

[Waylon Walker]

I learned there is a cool library for finding urls in text in python called urlextract. I used it to fix some broken urls in a repo for hacktoberfest.

pypi.org/project/urlextract/

[Nick Taylor]

[Nick Taylor]

[Nick Taylor]

[Nick Taylor]

[dohungthinhtin]

Last week I learned how to build a proxy webdav server between client and s3. Now our client can edit document from our web app view directly without download it or mount s3 to local machine drive.