A coworker wanted to run two separate copies of Slack on the Mac, so that he could watch updates from two different Teams at the same time. Personally, I just use the native multi-Team support in the app, but I can see how this would be useful. One answer is to use this command from the Terminal:
open -n /Applications/Slack.app
Scottish mathematicians are cool. Also, this led me to look up Lattice Multiplication, which is being taught in Common Core. But I think the Genaille-Lucas rulers were probably the coolest bit. Pre-calculate smaller pieces of a multiplication/division problem, use a little modulus magic, and large problems become a breeze.
Bone Up on Your Multiplication Skills | Hackaday
TL;DR: If you use the php-ssh2 extension for your WordPress core / theme / plugin updates, you might want to wait a little longer before upgrading to PHP 7.
A series of arty generative art “doodles”.
codedoodl.es \\ creative code sketches
Microsoft’s Visual Studio Code is not only free, but it’s now Open Source. And available for Windows, OSX, and Linux.
Visual Studio Code – Code Editing. Redefined.
A rare, serious, biographical comic from The Oatmeal. Go read it — it’s really good food for thought.
It’s going to be okay. – The Oatmeal
Online, searchable cheat-sheet for the ReactJS API.
React Cheat Sheet
Big ol’ overview of Promises in ES2015 (AKA, ES6).
ES6 Promises in Depth
Porting Bootstrap to ReactJS components.