Chris Ostrowski TheKidCoder

Interesting videos:

UPDATE a fork of this gist has been used as a starting point for a community-maintained "awesome" list: machine-learning-with-ruby Please look here for the most up-to-date info!

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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This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

	class ExpressionValidator < ActiveModel::EachValidator
	def validate_each(record, attribute, value)
	begin
	Dentaku(value)
	rescue Exception => e
	record.errors[attribute] << (options[:message] \|\| e.message)
	end
	end
	end

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8">
	<title>Open App</title>

	<!--
	URL Params:

	customSchemeURL: Your custom scheme app

	#config/initializers/carrierwave.rb
	module CarrierWave
	module MiniMagick
	# Rotates the image based on the EXIF Orientation
	def exif_rotation
	manipulate! do \|img\|
	img.auto_orient
	img = yield(img) if block_given?
	img
	end

	gem 'thin'
	gem 'sevenhelpers', git: 'https://github.com/sevenview/sevenhelpers.git'

	#gem_group :assets do
	# gem 'zurb-foundation', '~>4.0.0'
	#end

	gem_group :test, :development, :staging do
	gem 'factory_girl_rails', '~> 4.2'
	gem 'ffaker'

	function whichTransitionEvent(){
	var t;
	var el = document.createElement('fakeelement');
	var transitions = {
	'transition':'transitionend',
	'MSTransition':'msTransitionEnd',
	'MozTransition':'transitionend',
	'WebkitTransition':'webkitTransitionEnd'
	}

	# to generate your dhparam.pem file, run in the terminal
	openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048