Justin Brown jbrown

Get Mountain Lion and Homebrew to Be Happy

1) Install XCode 4.4 into /Applications

Get it from the App Store.

2) Install Command Line Tools

In XCode's Preferences > Downloads you can install command line tools.

A Capistrano Rails Guide

by Jonathan Rochkind, http://bibwild.wordpress.com

why cap?

Capistrano automates pushing out a new version of your application to a deployment location.

I've been writing and deploying Rails apps for a while, but I avoided using Capistrano until recently. I've got a pretty simple one-host deployment, and even though everyone said Capistrano was great, every time I tried to get started I just got snowed under not being able to figure out exactly what I wanted to do, and figured I wasn't having that much trouble doing it "manually".

How to make faster scroll effects?

Avoid too many reflows (the browser to recalculate everything)
Use advanced CSS3 for graphic card rendering
Precalculate sizes and positions

Beware of reflows

The reflow appens as many times as there are frames per seconds. It recalculate all positions that change in order to diplay them. Basically, when you scroll you execute a function where you move things between two reflows. But there are functions that triggers reflows such as jQuery offset, scroll... So there are two things to take care about when you dynamically change objects in javascript to avoid too many reflows:

	In response to all the responses to:

	http://twitter.com/rtomayko/status/1155906157

	You should never do this in a source file included with your library,
	app, or tests:

	require 'rubygems'

	The system I use to manage my $LOAD_PATH is not your library/app/tests

	require File.dirname(__FILE__) + '/../spec_helper'

	describe AccountController do
	as_any_user :get => :show do
	it { should assign_to(:user, :with => @current_user)}
	it { should respond_with(:success) }
	end

	as_any_user :get => :edit do
	it { should assign_to(:user, :with => @current_user)}

	class AppBuilder < Rails::AppBuilder
	include Thor::Actions
	include Thor::Shell

	def test
	append_test_gems
	rspec
	cucumber
	jasmine
	end

	# Removing leftover leases and persistent rules
	echo "cleaning up dhcp leases"
	rm /var/lib/dhcp3/*

	# Make sure Udev doesn't block our network
	# http://6.ptmc.org/?p=164
	echo "cleaning up udev rules"
	DIR_PATH=`readlink -f "/etc/udev/rules.d/70-persistent-net.rules"` # get rid of symlinks and get abs path
	rm -rf /etc/udev/rules.d/70-persistent-net.rules
	if [[ ! -d "${DIR_PATH}" ]] ; then # now you're testing

	gem "rack-ssl", "1.3.2"

	# when Capybara issue 409 or 422 get resolved, you can switch back to the official
	# capybara gem
	# https://github.com/jnicklas/capybara/pull/409
	# https://github.com/jnicklas/capybara/pull/422

	gem "capybara", git: "https://github.com/mcolyer/capybara.git", branch: "fix-ssl-redirects"

	<!DOCTYPE html>
	<html>
	<head>
	<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js'></script>
	<script>
	$(document).ready(function(){
	function debug(str){ $("#debug").append("<p>"+str+"</p>"); };
	if(typeof WebSocket === 'undefined') {
	alert("Your browser does not support websockets.")
	}

	// Media Queries in Sass 3.2
	//
	// These mixins make media queries a breeze with Sass.
	// The media queries from mobile up until desktop all
	// trigger at different points along the way
	//
	// And important point to remember is that and width
	// over the portrait width is considered to be part of the
	// landscape width. This allows us to capture widths of devices
	// that might not fit the dimensions exactly. This means the break