Lightning Talks

Bosco is introducing the speakers. Come to the ruby meetup!

Jeff Smick – Blather

• Simpler XMPP
• Make XMPP4R easier
• Requires libxml-ruby and EventMachine
• simple DSL
  -Handlers for ready, error, message, presence, iq
• Guards route stanzas
  • Guards can be symbols, hashes with string, hashes with regexs, lambdas or arrays
• PubSub is in the works and coming next

Tim Connor – Rack Middleware build, init call cycle

• based on the sinatra flash plugin
• Wanted to remove sinatra from it
• Found that every time you say “use” you are creating a lambda which will create an app reference
• You can check out his Rack::Flash

Wolfram Arnold – What’s Cool about cache money?

• Nick Kallen wrote the original Cache Money
• Backed by Memcached
• Abstracts away the caching between the code and the database so you don’t have to worry about it.
• Can just do User.find instead of User.get_cache
• named scope, has_many, etc will all work transparently
• Can almost use it as a drop in to add caching
• Cache Money doesn’t support joins but check out acts_as_most_popular

Yehuda Katz – Moneta

• Moneta is allows you to create objects that behave like hashes backed by any format you want
• Behaves just like a ruby hash
• Has adapters for BerkeleyDB, Datamapper, Memcached, S3, xattr, rufus and more
• Easy to write new adapters

Andy Delcambre – Datamapper Adapters

• Making it easier to write datamapper adapters
• Wrote an adapter for github repos today
• Demonstrating pulling down Github repos and searching with datamapper syntax

Brief interlude trying to figure out why the projector was not working

Erik Michaels-Ober – Merb Admin App

• like active scaffold for rails, this is for merb
• modeled after Django site admin
  uses their css and js
  python manage.py runserver
• introspects your model to display form elements intelligently
• adds a generator for adding new admin
• not up on github yet try sferik on twitter

Mislav Marohnić – RSPACTOR for continuous tests on OSX (& more!)

• “make it green then make it clean”
• autotest
  • Problems
    • one big file
    • awkward growl integration
    • pitfalls when using rspec-rails plugin
    • polling – uses 25% of cpu when idling :(
• Original RSpactor written by Andreas Wolff
  • OS X only because it uses filesystem events
  • made for Rspec + Growl integration
  • Console tool
  • but abandonded :(
• Mislav-RSpactor
  • cleaner, more modular, default mappings for usual directory structure
  • better mappings if its a rails project
  • tested!
  • so modular you can reuse the Listener if you want to listen for mac file system events
  • uses a lot less CPU
    Possibilities
    • running related tests while you TDD
    • compile Haml/Sass for static sites
    • trigger javascript sprockets build
    • render RDoc output while you edit comments
  • it can be run for all projects in your filesyste, you just opt each project in

Bryan Helmkamp – Rack::Bug

• Rack middleware
• inspired by Django debug toolbar
• Modular, can be used for any rack app
• Panels
  • rails env
  • rails response time (cpu time)
  • request vars (session cookies, rack env)
  • keeps track of SQL queries – shows backtrace on queries, explain for queries
  • count of ActiveRecord instantiations on the page using Oink
  • can look in Memcache cache
  • template traces (times for rendering)
  • aggregates all Rails log entries
  • KB delta for process size of Ruby during a single request
• runs on production environments, password protected
• instruments using alias_method_chain hacks
• Working with Yehuda Katz on Orchestra to someday soon simplify it

Pat Nakajima – No more Keynote with Slidedown

• Speaks at NYCrb meetup, and didn’t want to use Keynote
• Wanted to use Markdown but also wanted syntax highlighting
• Generates an HTML page that you can use to run your presentation
• The Maker’s Mark library was extracted to do easy syntax highlighting in Markdown

Chris Lee – Floxee – OS Twitter Dir

• open source twitter dirctory application
• tweet congress
  • directory of tweets from members of congress
• Floxee on Github

Max – PaMP: Privacy-aware Marketplace

• From IBM Almaden Research Labs
• privacy-aware market place
• Goals
  • to develop a platform that allows users to manage their privacy settings across social network
    -reducing the cognitive burden on a user; leveraging the wisdom of his crowd
  • Maps to opensocial, etc

Andrew Cantino – SelectorGadget

• No time :(
• “SelectorGadget is an open source bookmarklet that makes CSS selector generation and discovery on complicated sites a breeze.”

Kyle Maxwell – Parsley

• No time :(
• “Parsley is a simple to use and elegant language for creating HTML and XML parsers”
• “Parsley can be used from Ruby, Python, C/C++, and the *nix command-line.”