tomhicks

/*
Copy this into the console of any web page that is interactive and doesn't
do hard reloads. You will hear your DOM changes as different pitches of
audio.

I have found this interesting for debugging, but also fun to hear web pages
render like UIs do in movies.
*/

const audioCtx = new (window.AudioContext || window.webkitAudioContext)()

bradtraversy

MongoDB Cheat Sheet

Show All Databases

show dbs

Show Current Database

bradtraversy

GENERATORS:

• Text Content Generator - http://www.lipsum.com
• Favicon Generator - http://tools.dynamicdrive.com/favicon
• Data Generator - https://mockaroo.com/
• Mobile Mockup Generator - https://mockuphone.com
• Logo Generator - https://www.logaster.com
• UUID Generator - https://www.uuidgenerator.net/
• Hash Generator - https://passwordsgenerator.net/sha256-hash-generator/
• Ultimate Code Generator - https://webcode.tools/

gaearon

If you haven’t worked with JavaScript in the last few years, these three points should give you enough knowledge to feel comfortable reading the React documentation:

• We define variables with let and const statements. For the purposes of the React documentation, you can consider them equivalent to var.
• We use the class keyword to define JavaScript classes. There are two things worth remembering about them. Firstly, unlike with objects, you don't need to put commas between class method definitions. Secondly, unlike many other languages with classes, in JavaScript the value of this in a method [depends on how it is called](https://developer.mozilla.org/en-US/docs/Web/Jav

CodingDoug

Copying data from Firebase Realtime Database to a Google Sheet in real time via Cloud Functions

If you're trying to do this, you came to the right place!

Watch this code work in real time: https://twitter.com/CodingDoug/status/940022568089554944

See also this gist for copying in the other direction: https://gist.github.com/CodingDoug/44ad12f4836e79ca9fa11ba5af6955f7

Setup

rondy

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

---

Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

joepie91

Not all random values are created equal - for security-related code, you need a specific kind of random value.

A summary of this article, if you don't want to read the entire thing:

• Don't use Math.random(). There are extremely few cases where Math.random() is the right answer. Don't use it, unless you've read this entire article, and determined that it's necessary for your case.
• Don't use crypto.getRandomBytes directly. While it's a CSPRNG, it's easy to bias the result when 'transforming' it, such that the output becomes more predictable.
• If you want to generate random tokens or API keys: Use uuid, specifically the uuid.v4() method. Avoid node-uuid - it's not the same package, and doesn't produce reliably secure random values.
• If you want to generate random numbers in a range: Use random-number-csprng.

You should seriously consider reading the entire article, though - it's

nepsilon

How to change your commit messages in Git?

At some point you’ll find yourself in a situation where you need edit a commit message. That commit might already be pushed or not, be the most recent or burried below 10 other commits, but fear not, git has your back 🙂.

Not pushed + most recent commit:

git commit --amend

This will open your $EDITOR and let you change the message. Continue with your usual git push origin master.

Spencer-Easton

function exportSpreadsheet() {
 
  //All requests must include id in the path and a format parameter
  //https://docs.google.com/spreadsheets/d/{SpreadsheetId}/export
 
  //FORMATS WITH NO ADDITIONAL OPTIONS
  //format=xlsx       //excel
  //format=ods        //Open Document Spreadsheet
  //format=zip        //html zipped          
  

stephenway

git commit --amend --author "Stephen Way <way.stephen@gmail.com>" --no-edit && \
git rebase --continue
...
git push origin master --force