chumpy

Queue RPC Requests in GWT

The Problem

One of the handier tools in the GWT toolbox is a built in AJAX framework referred to as RPC or Remote Procedure Calls. Here’s the thing: Internet Explorer version 7 and prior is not awesome. IE pre-8 restricts the number of simultaneous XmlHttp requests to two for a given host. In most cases, this restriction doesn’t pose a real problem. For a rich client application (like the kind GWT is a good choice for) that may be leaving one of those two allowable connections open for a long poll while

chumpy

UserAgent userAgent = UserAgent.parseUserAgentString((String)request.getHeader("User-Agent"));
String browser = userAgent.getBrowser.getName();
String os = userAgent.getOperatingSystem().getName();

chumpy

#require 'active_support/core_ext'

class YamlToXml
  def self.yaml_to_xml file_to_read, file_to_write
    doc = String.new
    File.open( file_to_read ) { |yf| doc << YAML.parse( yf ).transform.to_xml }
    File.open( file_to_write, 'w' ) { |f| f.write( doc ) }
  end

  def self.xml_to_yaml file_to_read, file_to_write

chumpy

#require 'active_support/core_ext'

class YamlCompare
  def self.compare_keys first_file_info, second_file_info, results_location
    first_file = Hash.new
    second_file = Hash.new
    deltas_file = Hash.new
    File.open( first_file_info[:file_location] ) { |yf| first_file =  YAML.load( yf ) }
    File.open( second_file_info[:file_location] ) { |yf| second_file =  YAML.load( yf ) }
    first_file[first_file_info[:root]].each_pair do |k,v|

chumpy

# Here’s a way to do http basic authentication and tie it in 
# to the Restful Authentication mechanism to make current_person accessible:

def authenticate_person
  authenticate_or_request_with_http_basic do |login, password|
    person = Person.authenticate(login, password)
    return false if !person or person.nil?
    session[:person_id] = person.id 
  end
end

chumpy

#! /bin/bash
ifconfig -a ppp0 | grep inet | awk '{print $2}' | xargs -0 -I ip sudo route add default gw ip ppp0

chumpy

#! /bin/bash
gem list | cut -d" " -f1 | xargs gem uninstall -aIx

chumpy

gem -v = 1.8.17


NOTE: Gem.source_index is deprecated, use Specification. It will be removed on or after 2011-11-01.

chumpy

$ gem list

*** LOCAL GEMS ***

actionmailer (2.3.12)
actionpack (2.3.12)
activerecord (2.3.12)
activeresource (2.3.12)
activesupport (2.3.12)
addressable (2.2.6)

chumpy

Capybara Cheat Sheet

Navigating

  visit('/projects')
  visit(post_comments_path(post))