Patrick Bacon on Atomic Spin

Ruby

Using Regular Expressions to Validate an IP Address in Ruby

Ruby's standard library includes regular expressions to validate an IP address. The Resolv standard library includes a regex for IPv4 and IPv6 addresses.

DevOps & System Admin.

Multiple Ubuntu Installations with Grub

The steps I used to configure a small Grub partition used to chainload multiple Ubuntu installations on separate partitions.

Web Apps

Rake Assets Precompile with JRuby Complete

A quick work-around to get rake assets:precompile to work when using the jruby-complete.jar.

jRuby

Using Bundler with JRuby Complete

How to set up a JRuby project using the jruby-complete.jar using Bundler to manage gem dependencies.

jRuby

Experimenting with Clojure’s PersistentHashMap in JRuby

I benchmarked some tests run in JRuby that compare the Hamsterdam library using Hamster's immutable Hashes vs Clojure's PeristentHashMap, plus some gotchas.

Ruby

Making Refs in Ruby Using Celluloid Actors

An example of using Celluloid Actors to provide a poor man's Ref (Clojure-like) around an immutable data structure in JRuby to protect shared state.

jRuby

JRuby and vlcj – A Simple Full-Screen Media Player

A simple JRuby script showing how to use the vlcj library to playback video full screen on a Linux machine.

jRuby

Preventing JRuby Concurrency Errors with Hamster

How using Hamster's efficient, immutable, thread-safe collections can prevent ConcurrencyError exceptions in JRuby.

Web Apps

ExtJS Unit Testing Using Jasmine

Tips on configuring the Jasmine unit testing (BDD) framwork for use with Ext JS 4 components and classes.

Web Apps

Auto Login During Development with dotjs

How to use the dotjs browser extension to write simple user scripts, specifically one to automatically log in to a site under development.

Web Apps

Rendering Templates in Ext JS – So Many Choices

Ext JS 4.0.x provides many ways of rendering content: autoEl, html, tpl/data, renderTpl/renderData. Here are my suggestions on which to use when.

Web Apps

Getting Live Updates when Changing Stores in Ext JS

I recently had a live updating problem when moving an Ext JS model from one Ext.data.Store to another. Here's the solution I found.

Patrick Bacon

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