Ruby, a message to you

I wanted to see if my WAV file wrapper would work in 1.9. I didn’t see any reason why it shouldn’t, but little things change here and there, so you never know.

Well, something did go wrong. I know this is sloppy, but I was getting the octave of notes from something like this:

note.match(/\\d+$/)[0] rescue 4

It turns out that NoMethodError is no longer a descendant of StandardError, and is thus no longer rescued by that rescue. So when the note didn’t have its octave in tow, note.match(/\d+$/) was returning nil, and nil doesn’t have a method [], but it would cruise right past the rescue clause.

A quick fix (a simple exercise left for the reader), and Ruby 1.9 is making me beautiful sounds: