Joshua Hutt huttj

Full-stack developer. Loves data visualization and killer UX.

huttj / angular-pub-sub.js

Last active August 29, 2015 14:04

AngularJS pub/sub example

	angular.module('app')

	.service('dataSvc', function($q) {
	var dataStore = [];
	// Slight abuse of promises to achieve pub/sub pattern
	var updater = $q.defer();
	function addData(data) {
	// Add the data to the dataStore
	dataStore.push(data);
	// Tell all subscribers about the update, and

huttj / to_dict.py

Last active August 29, 2015 14:08

to_dict: Turn variables into a dictionary

	# Turn a list of variables into a dictionary, keyed on the variable names.
	# e.g., apple = 2
	# to_dict(apple) == {'apple': 2}
	def to_dict(*args):
	dict = {}
	for key in globals().keys():
	for var in args:
	if (var is not None) and (eval(key) == var):
	dict[key] = var
	if len(args) == len(dict):

huttj / index.html

Created December 26, 2014 04:25

Simple implementation of the 'heartbeat' pattern in NodeJS.

	<!doctype html>
	<html>
	<head>
	<title>Heartbeat test.</title>
	<script src="//ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
	</head>
	<body>
	<script>
	// Let the user set the ID in the query variable
	var id = parseInt((window.location.search.match(/id=(\d{2})/) \|\| []) [1]);

huttj / safe_object_access.js

Created December 31, 2014 18:49

Safe property access in JavaScript

	// Takes the first value after the last true value
	var reverseCoalesce1 = true && 555 && 123;
	console.log(reverseCoalesce1); // 123

	// If a value is null, it stops there
	var reverseCoalesce2 = true && null && 123;
	console.log(reverseCoalesce2); // null

	// This is great for object access
	var obj = {a: {b: {c: 2}}};

huttj / lookSaySequence.js

Last active August 29, 2015 14:12

Turn a sequence of numbers into a sequence of words

	var lookSaySequence = (function() {

	var words = {
	'0': 'zero',
	'1': 'one',
	'2': 'two',
	'3': 'three',
	'4': 'four',
	'5': 'five',
	'6': 'six',

huttj / lookSaySequenceZh.js

Last active August 29, 2015 14:12

Chinese version of lookSaySequence--for kicks.

	var lookSaySequence = (function() {

	var words = {
	'0': '零',
	'1': '一',
	'2': '二',
	'3': '三',
	'4': '四',
	'5': '五',
	'6': '六',

huttj / parseTimestamp.js

Created January 13, 2015 09:26

A simple method to parse a PostgreSQL time stamp in Safari.

	// Returns the timestamp as a Date object (from the host's timezone),
	// in GMT. If timestamp is not GMT, pass in a truthy value for isLocal.
	function parseTimestamp(timestamp, isLocal) {
	var z = isLocal ? 0 : new Date().getTimezoneOffset() / 60;
	var t = timestamp.split(/[\- :\.]/).map(Number);
	return new Date(t[0], t[1]-1, t[2], t[3]-z, t[4], t[5], t[6], t[7]);
	}

	var input = "2015-01-13 08:52:05.1234";
	console.log(parseTimestamp(input).toString()); // 'Tue Jan 13 2015 00:52:06 GMT-0800 (Pacific Standard Time)'

huttj / typeEnforcement.js

Created February 20, 2015 22:16

Type enforcement in JavaScript

	function User(data) {
	this.name = is(String)(data.name);
	}

	function is(obj) {
	return function(val) {
	if (val === null \|\| val.constructor !== obj) {
	throw [
	'Invalid type specified; expected:',
	obj.name + ',',

huttj / SocketSvc.js

Created March 1, 2015 22:07

Basic socket usage in Angular/Ionic

	angular.module('app')

	.service('Socket', function($rootScope) {

	var socket = io.connect('http://www.foo.com:5000');

	var S = {};

	S.on = function(eventName, callback) {
	socket.on(eventName, function () {

huttj / indexOf.js

Last active August 29, 2015 14:17

indexOf

	function indexOf(haystack, needle) {
	// If either is undefined, quit
	if (!haystack \|\| !needle) return -1;

	for (var i = 0; i < haystack.length; i++) {

	// If there's not enough chars left in
	// `haystack` for a match, quit
	if (haystack.length - i < needle.length) return -1;