Ustice

Boolean Algebra in a nutshell for JS/TS programmers

There are a lot of strategies that you will hear about in the Javascript community for keeping your conditionals from becoming a tangled mess. This isn't like them. This is someting different. MATH! Boolean Algebra to be exact. I use it all the time to simplify complex conditionals. There are two things that you need to know: de Morgan's Theorem, and Karnaugh (pronounced CAR-no) Maps. (Don't worry, there is no test)

de Morgan's Theorem

De Morgan's Theorem is great distributing nots (!), and for when you want to convert an && to an ||, or back. This is it:

 !(A && B) = !A || !B

CoolKan

Flappy Bird Javascript

A Pen by Julien Az on CodePen.

License.

lhorie

Friday Fun: Svelte-like variable reactivity in 7LOC with with Proxy

Every once in a blue moon, I like to hack up some crazy toy proof of concept to get away from everyday's stiff serious production-ready coding. This morning, I decided to mess around with an idea of implementing something similar to Svelte's reactive variables, but using pure Javascript.

So here's that godawful eye-bleeding fun hack: a 7-line "svelte" (needless to say, it doesn't do nearly enough to be useful in the real world and breaks just about every best practice rule in the book because why the hell not)

https://codepen.io/lhorie/pen/BaRzgRe

Can you figure out why this works? Any ideas to make it more devilish/clever/insane are welcome :)

yig

#!/bin/sh

## Author: Yotam Gingold
## License: CC0 (public domain) https://creativecommons.org/share-your-work/public-domain/cc0/
## URL: https://gist.github.com/yig/af5bbb054bb9c4de39abc9156e6863e1/

## Download the latest Zoom installer.
echo "==> Downloading the latest Zoom installer."
cd ~/Downloads
## Intel:

arainho

#!/usr/bin/env bash

# sources
https://drive.google.com/drive/folders/1MP0cNLyJjzPLNrvNDCZv9hRuif091f0c
https://apple.stackexchange.com/questions/358651/unable-to-completely-uninstall-zoom-meeting-app
https://medium.com/bugbountywriteup/zoom-zero-day-4-million-webcams-maybe-an-rce-just-get-them-to-visit-your-website-ac75c83f4ef5

echo Stopping Zoom...
pkill "zoom.us"

adambene

function* delays() {
  let a = yield delay(800, "Hello, I'm an");
  console.log(a);

  let b = yield delay(400, "async coroutine!");
  console.log(b);
}

const coroutine = nextValue => iterator => {
  const { done, value } = iterator.next(nextValue);

sscarduzio

#!/bin/bash

# CONF

DBG=true
RELOG_UNAME=your@email.com
RELOG_PASSW=xxxxxxxxxxxxxxx

# END CONF

Warry

How to make faster scroll effects?

• Avoid too many reflows (the browser to recalculate everything)
• Use advanced CSS3 for graphic card rendering
• Precalculate sizes and positions

Beware of reflows

The reflow appens as many times as there are frames per seconds. It recalculate all positions that change in order to diplay them. Basically, when you scroll you execute a function where you move things between two reflows. But there are functions that triggers reflows such as jQuery offset, scroll... So there are two things to take care about when you dynamically change objects in javascript to avoid too many reflows:

benjie

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