Jason Weathered jasoncodes

Remove trailing whitespace, convert tabs to spaces and file format to unix (remove ugly ^M carriage returns) from files using a single command:

vim -es -c 'set et ts=2 | bufdo retab | %s/\s\+$//e | set ff=unix | w' -c 'q' FILES

You could get your FILES using `find`

vim -es -c 'set et ts=2 | bufdo retab | %s/\s\+$//e | set ff=unix | w' -c 'q' $(find scripts -name '*.sh' -type f)

If in doubt, ask man.

Nestable, sortable and dragable categories:

In the project I'm working on we wanted to have a Category model which we wanted to be nestable. But we also liked the user to have a draggable interface to manage and rearrange the order of his categories. So we chose awesome_nested_set for the model and jQuery.nestedSortable for the UI.

It took me some time to arrange things to work properly so I wanted to share my work in case it helps anybody.

Before beginning

you might want to take a look at a demo app

go to: http://awesomenestedsortable.heroku.com/groups/
click in show of any group

This creates a 560mb ramdisk. Adjust the size accordingly. I think the number at the end of the command is the number of disk blocks. They are 2kb in size for me.
Restarting postgres is not necessary; you can create the ramdisk and tablespace while postgres is running.
You will lose all data in the ramdisk tablespace when you shut your machine down


  $ diskutil erasevolume HFS+ "postgres_ramdisk" `hdiutil attach -nomount ram://1165430`
  Started erase on disk1
  Unmounting disk
  Erasing
 Initialized /dev/rdisk1 as a 569 MB HFS Plus volume

ruby-1.9.3-p327 cumulative performance patch for rbenv

This installs a patched ruby 1.9.3-p327 with various performance improvements and a backported COW-friendly GC, all courtesy of funny-falcon.

Requirements

You will also need a C Compiler. If you're on Linux, you probably already have one or know how to install one. On OS X, you should install XCode, and brew install autoconf using homebrew.

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = [email protected]:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

	Then /^"([^"])" should be set as "([^"])"$/ do \|term, definition\|
	first(:xpath, "//dd[preceding-sibling::dt[.='#{term}']]").text.
	should == definition
	end

	# The latest version of this script is now available at
	# https://github.com/jasoncodes/dotfiles/blob/master/aliases/rbenv.sh

	VERSION=1.9.3-p286
	brew update
	brew install rbenv ruby-build rbenv-vars readline ctags
	if [ -n "${ZSH_VERSION:-}" ]; then
	echo 'eval "$(rbenv init - --no-rehash)"' >> ~/.zshrc
	else
	echo 'eval "$(rbenv init - --no-rehash)"' >> ~/.bash_profile

	###
	# Read in XML as a stream, write out JSON as a stream. As little information
	# is kept in memory as possible.
	require 'nokogiri'
	require 'psych'

	class JSONTranslator < Nokogiri::XML::SAX::Document
	attr_reader :emitter

	def initialize emitter

	@mixin background-image-retina($file, $type, $width, $height) {
	background-image: url($file + '.' + $type);

	@media (-webkit-min-device-pixel-ratio: 2), (-moz-min-device-pixel-ratio: 2) {
	& {
	background-image: url($file + '@2x.' + $type);
	-webkit-background-size: $width $height;
	}
	}
	}

	#...

	module MyProject
	class Application < Rails::Application
	config.assets.precompile += %w( ie6.css ie6_portion2.css ie7.css ie7_portion2.css ie8.css ie8_portion2.css ie9.css ie9_portion2.css)

	#...