Kasper Mikiewicz Idered

Intercom user_hash

Code for generating the user_hash value for Intercom's Identity verfication (Note: Identity verification was prevoiusly called Secure Mode)
Based on http://www.jokecamp.com/blog/examples-of-creating-base64-hashes-using-hmac-sha256-in-different-languages/#ruby
When creating this for mobile, the final output needs to be in lowercase (the web version accepts both upper and lower case)

Remember that your secret key should never be exposed to the public

So Javascript code below should only be used for testing unless modified and used to run on a server

Experiment: Backbone-style events in Preact

What if we wanted to use backbone-style event delegation within the component paradigm afforded by react/preact/etc? Would that be useful?

Example

Basic usage:

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?

Windows 10 Development Environment for Scala

This is a guide for Scala and Java development on Windows, using Windows Subsystem for Linux, although a bunch of it is applicable to a VirtualBox / Vagrant / Docker subsystem environment. This is not complete, but is intended to be as step by step as possible.

Harden Windows 10

Read the entire Decent Security guide, and follow the instructions, especially:

Set UAC to full
Enable Drive Encryption

Array Iteration

https://gist.github.com/ljharb/58faf1cfcb4e6808f74aae4ef7944cff

While attempting to explain JavaScript's reduce method on arrays, conceptually, I came up with the following - hopefully it's helpful; happy to tweak it if anyone has suggestions.

Intro

JavaScript Arrays have lots of built in methods on their prototype. Some of them mutate - ie, they change the underlying array in-place. Luckily, most of them do not - they instead return an entirely distinct array. Since arrays are conceptually a contiguous list of items, it helps code clarity and maintainability a lot to be able to operate on them in a "functional" way. (I'll also insist on referring to an array as a "list" - although in some languages, List is a native data type, in JS and this post, I'm referring to the concept. Everywhere I use the word "list" you can assume I'm talking about a JS Array) This means, to perform a single operation on the list as a whole ("atomically"), and to return a new list - thus making it mu

	<!DOCTYPE html>
	<html>
	<head>
	<!-- Object Format Tests -->
	<script src='tiles.js'></script>
	<!-- Binary Format Tests -->
	<!--<script src='tiles-binary.js'></script>-->
	</head>
	<body>
	</body>

	/** Async version of Array.prototype.reduce()
	* await reduce(['/foo', '/bar', '/baz'], async (acc, v) => {
	* acc[v] = await (await fetch(v)).json();
	* return acc;
	* }, {});
	*/
	export async function reduce(arr, fn, val, pure) {
	for (let i=0; i<arr.length; i++) {
	let v = await fn(val, arr[i], i, arr);
	if (pure!==false) val = v;

	@echo on
	REM checked for Windows 10
	REM fork from https://gist.github.com/theultramage/cbdfdbb733d4a5b7d2669a6255b4b94b
	REM you may want full list https://gist.github.com/raspi/203aef3694e34fefebf772c78c37ec2c

	REM SET attrib=+ATTRIB_HIDE
	SET attrib=-ATTRIB_HIDE

	REM Hard disk burst ignore time
	powercfg -attributes 0012ee47-9041-4b5d-9b77-535fba8b1442 80e3c60e-bb94-4ad8-bbe0-0d3195efc663 %attrib%

	/* @flow */

	type Result<T> = {
	result: boolean,
	payload: T
	}

	type Conditional<T> = {
	type: 'conditional',
	exec(T): Result<T>