This evening I gave a talk about tensorflow-ruby to Seattlerb, the oldest Ruby group in the world I volunteered a month ago to give a presentation - I knew a deadline would...

To really understand Ruby you need to understand its Class/Object model And to do that, read Brian Marick’s mini-book “A Little Ruby, a Lot of Objects” It’s modeled after...

As noted else where, ruby 191 hasn't exactly bounded out of the gate That's not particularly surprising, considering 191 has been available for only a...

I'm happy to announce the release of libxml-ruby 113 Besides including the usual assortment of new features and bug fixes, this release also includes a speed...

A mere seven years after its inception, libxml-ruby has finally reached version 10 libxml-ruby provides ruby, via the libxml2 libary, the super fast, feature rich xml parser...

There is general discontent with the state of XML processing in Ruby - see for example here or here An obvious solution is to use libxml However that has been a non-starter...

Today I was fixing up some inefficiencies in Rail's Postgresql adapter (more about that in a later post), and came across this strange looking code: def tables(name = nil) ...

Its been over a year since I blogged about GEOS, an open source project that provides rich functionality for analyzing and manipulating geometries and is a key part of...

Last week I showed how to profile a Rails application using ruby-prof The post was driven by our desire to improve MapBuzz's map rendering speed Our nightly log analysis showed...

While analyzing Rails performance, I stumbled upon the fact that parsing timestamps in ActiveRecord is very slow (I'll post more about that in an upcoming blog) A bit of...

Make sure to grab the latest version of ruby-prof, currently 052, which includes some performance tweaks and bug fixes A year has passed since the last release of ruby-prof If...

One reason developers like ActiveRecord is that it automatically generates the SQL needed for querying a relational database Obviously, there are various knobs for controlling...

Let's say my last post tempted you to check out libxml's validation functionality However, you work in shop that develops on multiple platforms, including Windows, OS X and...

Web sites based on user generated content need to well let users generate content (obviously you read this blog for its insights!) Except that opens a huge can of worms Some...

Pat Eyler has written a nice set of articles about profiling Ruby code He shows how to use the built in Ruby profiler as well as ruby-prof (my personal favorite :) He talks a...

GEOS is one of the more important open source projects in the GIS/geospatial industry It provides rich functionality for analyzing and manipulating geometries and...

Last time I gave kudos to Sapphire in Steel for the addition of a Ruby console to their debugger This time its kudos for Arachno Lother Scholz, the develeper, sent me an...

In the religious war between the command line and IDE (integrated development environment), I'm firmly on the IDE side Having said that, there's no...

Update: ruby-prof 050 is now available and has significantly more features than 040, including better threading support, rails support, call tree output, etc After porting...

Yesterday I wanted to profile some methods I'm using on a Rails controller To get a feel for profiling Ruby code I put together a test case, added a "require 'prof'" to the top...