Profile cover photo
Profile photo
Dave Jacoby
"If you can not measure it, you can not improve it." -- Lord Kelvin
"If you can not measure it, you can not improve it." -- Lord Kelvin

Dave's posts

Post has attachment
Dave Jacoby commented on a post on Blogger.
Fair enough, Mark. 

Post has attachment
Coding for Pi Day
Today is Pi Day, which is a good day to talk about Pi. Normally, I'd probably use Pi, sine and cosine to draw things, but instead, I flashed on a couple ways to estimate Pi. Also, showing you can use Unicode characters in Perl. #!/usr/bin/env perl

use feat...

Post has attachment
Also: our website has moved to

And: is a big Perl shop that's interested in supporting Mongers groups, and starting in April, they will support us.

Been a while since I've posted here.

Today at 5:30 pm, +Joe Kline will talk about Asynchronous Programming with Perl. 5:30pm in EE317 on Purdue's campus.

Afterward, we will be going to Lafayette Brewing Company for HackLafayette Open Source Food & Chat. 7:30pm is our listed starting time. Please RSVP on

+Dan Noland I'm seeing your response but can't reply and it doesn't show up on my blog. ???

Post has attachment
Having Problems Munging Data in R

# a blog post in code-and-comment form

# Between having some problems with our VMs and wanting to learn Log::Log4perl
# I wrote a program that took the load average -- at first at the hour, via
# crontab -- ...

Post has attachment
tldr: Still can't auth to Spotify, but can get info via DBUS

It started with reading about using R to determine the most depressing of all Radiohead songs. I decided that I'd like to have that as a Spotify playlist, which made me dive back into their API.

I can query all I want, but I can't create and populate playlists because I can't get the authentication piece working. With Python, I can get an auth token, but I can't reuse it, which makes the process frustrating.

When I was playing with this, though, I noticed that the media buttons don't work; they send a message that the computer receives, but it should trigger pause or play or next, depending.

Instead, I found this, which uses the Net::DBus module to allow me to pause and play from the command line, rather than go to the last virtual desktop and click the pause button.

I can also give it a Spotify URL to start a song, which means I could have Zappa's "Muffin Man" signal the end of the work day again.

What messaging software do you use and why? Is it SMS/MMS based? Is it IP based?

Post has attachment
Ding! Ding! The Process is Dead!
Starts with a thing I saw on David Walsh's Blog : I've been working with beefy virtual machines, docker containers, and build processes lately. Believe it or not, working on projects aimed at making Mozilla developers more productive can mean executing cod...

Post has attachment
I've been using Text-To-Speech tools and recently started looking into AWS's Polly. I compare Festival, ESpeak and Polly so you don't have to.
Wait while more posts are being loaded