“Introduction to Ruby” talk from Twin Cities Code Camp 7

Posted by Brian in News, Projects (October 25th, 2009)

On Saturday, I had the honor of giving a talk on the Ruby programming language to an exceptional audience. I talked about the simple syntax and powerful libraries available, and then showed how we can use Ruby to maintain static web sites, build web applications, and test web sites.

During the talk, I showed how to use Sinatra to create a very simple wiki. I wrote two versions. During the talk, I used SQLite3 and ActiveRecord, but I wrote a version that uses MongoDB. You can grab the source for those at Github.

Here are the slides from my talk. You can view the notes too by viewing the slides on Slideshare.

Participating at code camps is something I really enjoy. It gives me a chance to talk about what I love, but it also gives me a chance to learn from other speakers. These events are usually free, and an awful lot of fun.

Mongodb and Macports

Posted by Brian in tips (October 20th, 2009)

I just hit a bump in the road with installing MongoDB via Macports 1.8.1.

sudo port install boost pcre++ spidermonkey
sudo port install mongodb

When I ran


I was greeted with

dyld: Library not loaded: /opt/local/lib/libnspr4.dylib
  Referenced from: /opt/local/lib/nspr/libplds4.dylib
  Reason: image not found
Trace/BPT trap

To fix, I simply copied the missing file from its origin to where Mongodb was looking.

 sudo  cp /opt/local/lib/nspr/libnspr4.dylib /opt/local/lib

And all was right.