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David W. Body davidbody

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davidbody / convert.rb
Created February 10, 2009 20:07
#!/usr/bin/env ruby
# Finds all files in app directory that have CRLF line endings
# and converts them to LF line endings by removing all of the CR (\r) characters.
files = %x{find app -exec file {} \\; | grep CRLF}.map{|s| s.gsub(/:.*$/, '').strip}
files.each do |f|
puts "Processing #{f}"
system "tr -d '\\r' < #{f} > #{f}.new"
system "mv #{f}.new #{f}"
end
@davidbody
davidbody / semicolon.html
Created February 14, 2009 01:26
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>semicolon</title>
<link rel="stylesheet" type="text/css" href="http://yui.yahooapis.com/2.6.0/build/logger/assets/logger.css"/>
<link rel="stylesheet" type="text/css" href="http://yui.yahooapis.com/2.6.0/build/yuitest/assets/testlogger.css"/>
<script type="text/javascript" src="http://yui.yahooapis.com/2.6.0/build/yahoo-dom-event/yahoo-dom-event.js"></script>
<script type="text/javascript" src="http://yui.yahooapis.com/2.6.0/build/logger/logger-min.js"></script>
<script type="text/javascript" src="http://yui.yahooapis.com/2.6.0/build/yuitest/yuitest-min.js"></script>
@davidbody
davidbody / scrape_presentations.rb
Created May 14, 2009 22:56
Scrape RailsConf 2009 presentations
#!/usr/bin/env ruby
require 'rubygems'
require 'curb'
require 'webrat'
Webrat.configure { |config| config.mode = :mechanize }
session = Webrat.session_class.new
session.visit "http://en.oreilly.com/rails2009/public/schedule/proceedings"
session.dom.search(".en_session_downloads a").each do |link|
url = URI.escape(link['href'])
@davidbody
davidbody / font-cache-clear.sh
Created May 22, 2009 16:06
#!/bin/sh
# clear Leopard font cache
# http://www.macworld.com/article/139383/2009/03/fontcacheclear.html
atsutil databases -removeUser
atsutil server -shutdown
atsutil server -ping
@davidbody
davidbody / combine_mp3_files.rb
Created February 17, 2010 13:21 — forked from timander/combine_mp3_files.rb
#!/bin/ruby
def combine_mp3_files(final_mp3)
`rm #{final_mp3}`
Dir.glob("*.mp3").sort.each do |file|
puts "#{file}"
`cat "#{file}" >> #{final_mp3}`
end
end
@davidbody
davidbody / ajax_controller.rb
Created March 22, 2011 01:14
class AjaxController < ApplicationController
def handle_checkbox
render :text => "You entered: #{params[:my_input]}"
end
end
@davidbody
davidbody / nokogiri_demo.rb
Created June 3, 2011 13:39
Parsing XML with Nokogiri
#!/usr/bin/env ruby
require 'nokogiri'
xml = <<XML_END
<?xml version="1.0"?>
<root><this><document><is>truncated
XML_END
puts "Original:"
puts xml
@davidbody
davidbody / pi.clj
Created August 11, 2011 17:15
Calculate Pi in Clojure
(defn calculate-pi
"Calculates Pi using the approximation 4 * (1 - 1/3 + 1/5 - 1/7 + …)"
[iterations]
(* 4.0 (reduce + (map eval (partition 2 (interleave (cycle '(+ -)) (map #(/ 1.0 %) (take iterations (filter odd? (iterate inc 1))))))))))
(println "calculated pi =" (calculate-pi 100000))
(println "Math.PI =" (. Math PI))
@davidbody
davidbody / pi.clj
Created August 11, 2011 18:26 — forked from bmabey/pi.clj
Calculate Pi in Clojure
(defn calculate-pi
"Calculates Pi using the approximation 4 * (1 - 1/3 + 1/5 - 1/7 + ...)"
[iterations]
(let [odd-numbers (filter odd? (iterate inc 1))]
(* 4.0
(apply + (map / (cycle [1.0 -1.0]) (take iterations odd-numbers))))))
(println "calculated pi =" (calculate-pi 100000))
(println "Math/PI =" Math/PI)
@davidbody
davidbody / application_controller.rb
Created December 20, 2011 16:37
Rails admin_only!
class ApplicationController < ActionController::Base
protect_from_forgery
def admin_only!
if user_signed_in?
unless current_user.admin?
flash[:error] = "The feature you attempted to use is restricted to admins only."
redirect_to root_url
end
else