Josiah Wiebe josiahwiebe

ES6 JavaScript Compose Function

Definition

const compose = (...fns) =>
  fns.reduceRight((prevFn, nextFn) =>
    (...args) => nextFn(prevFn(...args)),
    value => value
 );

Comparison of `npm scripts` vs Gulp

`npm scripts`

Pros

npm scripts are low-level and leverage the actual library you want to use (example: "lint": "eslint ./")
package.json is a central place to see what scripts are available (also npm run will list all scripts)
When things get too complicated you can always defer to another file (example: "complex-script": "babel-node tools/complex-script.js")
npm scripts are more powerful than one might first think (pre/post hooks, passing arguments, config variables, chaining, piping, etc...)

Himawari-8 animation tutorial

Here’s how to make animations like this one. It requires intermediate Unix command-line knowledge, to install some tools and to debug if they don’t work. You’ll need these utilities:

curl (or you can translate to wget)
convert and montage, part of ImageMagick
ffmpeg, plus whatever codecs
parallel, for iteration that’s nicer than shell for loops or xargs
run everything in zsh for leading 0s in numerical ranges to work

Video conversion with FFmpeg

Install

On mac:

Download the latest release.
Extract the binary and place it in /usr/local/bin.

Command basics

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

Raspberry pi dashboard

This is what we did to setup a few dashboards at platanus

You'll need

Raspberry Pi
Dashing Service
Wifi stick (optional)

OBSOLETE

This entire guide is based on an old version of Homebrew/Node and no longer applies. It was only ever intended to fix a specific error message which has since been fixed. I've kept it here for historical purposes, but it should no longer be used. Homebrew maintainers have fixed things and the options mentioned don't exist and won't work.

I still believe it is better to manually install npm separately since having a generic package manager maintain another package manager is a bad idea, but the instructions below don't explain how to do that.

Fixing npm On Mac OS X for Homebrew Users

Installing node through Homebrew can cause problems with npm for globally installed packages. To fix it quickly, use the solution below. An explanation is also included at the end of this document.

	// 🔥 Node 7.6 has async/await! Here is a quick run down on how async/await works

	const axios = require('axios'); // promised based requests - like fetch()

	function getCoffee() {
	return new Promise(resolve => {
	setTimeout(() => resolve('☕'), 2000); // it takes 2 seconds to make coffee
	});
	}

	[
	{
	"name": "Alberta",
	"abbreviation": "AB"
	},
	{
	"name": "British Columbia",
	"abbreviation": "BC"
	},
	{

	#!/usr/bin/ruby
	# SIFTTTER 1.5: An IFTTT-to-Day One Logger by Craig Eley 2014 <http://craigeley.com>
	# Based on tp-dailylog.rb by Brett Terpstra 2012 <http://brettterpstra.com>
	# Multiple Date Function by Paul Hayes 2014 <http://paulrhayes.com>
	#
	# Notes:
	# * Uses `mdfind` to locate a specific folder of IFTTT-generated text files changed in the last day
	# * The location of your folder should be hardcoded in line 67, and the location of your Day One in line 66
	# * Scans leading timestamps in each line matching the selected dates
	# * Does not alter text files in any way