Daniel Grijuela dgrijuela

Essential JavaScript Links

I no longer mantain this list. There are lots of other very comprehensive JavaScript link lists out there. Please see those, instead (Google "awesome JavaScript" for a start).

My largest Sidekiq application had a memory leak and I was able to find and fix it in just few hours spent on analyzing Ruby's heap. In this post I'll show my profiling setup.

As you might know Ruby 2.1 introduced a few great changes to ObjectSpace, so now it's much easier to find a line of code that is allocating too many objects. Here is great post explaining how it's working.

I was too lazy to set up some seeding and run it locally, so I checked that test suite passes when profiling is enabled and pushed debugging to production. Production environment also suited me better since my jobs data can't be fully random generated.

So, in order to profile your worker, add this to your Sidekiq configuration:

if ENV["PROFILE"]

###Icons

Name	Size
iphone_2x	120x120
iphone_3x	180x180
ipad	76x76
ipad_2x	152x152
android_ldpi	36x36
android_mdpi	48x48

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!

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Setting up a SSL Cert from Comodo

I use Namecheap.com as a registrar, and they resale SSL Certs from a number of other companies, including Comodo.

These are the steps I went through to set up an SSL cert.

Purchase the cert

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

	/**
	* VH and VW units can cause issues on iOS devices: http://caniuse.com/#feat=viewport-units
	*
	* To overcome this, create media queries that target the width, height, and orientation of iOS devices.
	* It isn't optimal, but there is really no other way to solve the problem. In this example, I am fixing
	* the height of element `.foo` —which is a full width and height cover image.
	*
	* iOS Resolution Quick Reference: http://www.iosres.com/
	*/

	<!DOCTYPE html>
	<html>
	<head>
	<title>Trigger fullscreen HTML5 video on iPad</title>
	<style>
	#video { height: 1px; opacity: 0; position: absolute; width: 1px; }
	#play { width: 100px; }
	</style>
	</head>
	<body>

	{
	"USD": {
	"symbol": "$",
	"name": "US Dollar",
	"symbol_native": "$",
	"decimal_digits": 2,
	"rounding": 0,
	"code": "USD",
	"name_plural": "US dollars"
	},