Kelly Fox kfox

Keeping SCM accounts separate using asdf and direnv

These instructions will enable you to use different SSH keys for different accounts across different Source Code Management (SCM) providers like GitHub, Gitlab, and others, including internal on-prem versions of those providers. You can also use this approach to switch between multiple accounts for a single SCM provider, e.g. a personal Github account and a work Github account.

Installation and Setup

Install asdf by following the Getting Started instructions. asdf is the tool used to manage any number of versions of various programming language runtimes or environments. You can use asdf and the appropriate asdf plugins to replace separate tools like nvm, pyenv, rvm, etc.
Install the direnv plugin for asdf per these instructions. Direnv is the bit that "automagially"

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

Setting up github and bitbucket on the same computer (Windows)

Guide for Windows

mix3d asked for some help using this guide with windows so here we go. This was tested with Windows 10. Run all commands in Git Bash once it's installed.

Github will be the main account and bitbucket the secondary.

Git for Windows

Download and install Git for Windows
- In the installer, select everything but decide if you want a desktop icon (2nd step)

Git

Global Settings

Related Setup: https://gist.github.com/hofmannsven/6814278
Related Pro Tips: https://ochronus.com/git-tips-from-the-trenches/
Interactive Beginners Tutorial: http://try.github.io/
Git Cheatsheet by GitHub: https://services.github.com/on-demand/downloads/github-git-cheat-sheet/

Reminder

Press minus + shift + s and return to chop/fold long lines!

AngularJS Directive Attribute Binding Explanation

When using directives, you often need to pass parameters to the directive. This can be done in several ways. The first 3 can be used whether scope is true or false. This is still a WIP, so validate for yourself.

Raw Attribute Strings

<div my-directive="some string" another-param="another string"></div>

This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.

You're Missing the Point of Promises

Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:

getTweetsFor("domenic", function (err, results) {
 // the rest of your code goes here.

1. Clone your fork:

git clone [email protected]:YOUR-USERNAME/YOUR-FORKED-REPO.git

2. Add remote from original repository in your forked repository:

cd into/cloned/fork-repo
git remote add upstream git://github.com/ORIGINAL-DEV-USERNAME/REPO-YOU-FORKED-FROM.git
git fetch upstream

	/*
	Copy this into the console of any web page that is interactive and doesn't
	do hard reloads. You will hear your DOM changes as different pitches of
	audio.

	I have found this interesting for debugging, but also fun to hear web pages
	render like UIs do in movies.
	*/

	const audioCtx = new (window.AudioContext \|\| window.webkitAudioContext)()

	import com.typesafe.config.ConfigFactory
	import scala.util.Properties

	class MyConfig(fileNameOption: Option[String] = None) {

	val config = fileNameOption.fold(
	ifEmpty = ConfigFactory.load() )(
	file => ConfigFactory.load(file) )

	def envOrElseConfig(name: String): String = {

	var util = require('util');
	var events = require('events');
	var redis = require('redis');

	var RedisQueueConsumer = function (port, host) {
	events.EventEmitter.call(this);

	this.port = port \|\| 6379;
	this.host = host \|\| '127.0.0.1';
	};