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

jamesscottbrown

Michael Hoffman's tweet about not having ‘that slide’

Arvind Narayanan highlighted part of the @enigmaconf speaker guide

Pac-Man rule: https://twitter.com/LaurenceMillar/status/931795364843200513

• “#JSM2018 leading the way into the future by asking for Twitter handle at registration to be shared with other meeting participants.” (tweet)

Firsts: organizing a workshop - a blog post by Veronika Cheplygina

xem

Conventions

• A = [xA, yA] is a point on the 2D plane. Same for B, C, ...
• lengths are in any unit (ex: pixels)
• code snippets are in JavaScript

Degrees to radians

angleRad = angleDeg * Math.PI / 180;

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

revolunet

Python VS ES6 syntax comparison

Python syntax here : 2.7 - online REPL

Javascript ES6 via Babel transpilation - online REPL

Imports

import math

rezoner

/* 
  A full list of simple easing equations inspired by GIST from greweb - https://gist.github.com/gre/1650294
  Equations source - http://gsgd.co.uk/sandbox/jquery/easing/
*/

{
  linear: function(t) {
    return t
  },
  inQuad: function(t) {

yunga

_________ _____ _______________       _____
\_   ___ \\    \\___________   \____ / ____\     ~/.bash/cliref.md
/    \  \/|    | |   ||       _/ __ \  __\    copy/paste from whatisdb
\     \___|__  |_|_  ||    |   \  __/|_ |   http://pastebin.com/yGmGiDQX
 \________  /_____ \_||____|_  /____  /_|     yunga.palatino@gmail.com
 20160515 \/ 1527 \/         \/     \/

---

alias CLIRef.txt='curl -s "http://pastebin.com/raw/yGmGiDQX" | less -i'

lancejpollard

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