informational | Daniel P. Clark

May 29, 2016 by Daniel P. Clark

How to Build the Ultimate Remote Pair Programming Environment

There are a handful of desktop sharing apps out there and there are plenty of shell/editor sharing setups. But the biggest problem with these is you are opening up your own personal computer to not only the person(s) you’re connecting with, but also the potentially vulnerable or malicious technology you choose to use. A proper…

March 22, 2016 by Daniel P. Clark

Rails: Has One Through Polymorphic Relation

As I’ve described in my blog post “Rails Polymorphic Associations” I’ve stated that polymorphic relations in Rails are best for scenarios where a model may “belong to” one of many other kinds of model. So a Comment model with the polymorphic commentable relationship can belong to any other record in your Rails app. This is…

March 7, 2016 by Daniel P. Clark

Make the Impossible Possible

[Don’t Listen to the Naysayers.] How many times have you heard that you can’t do this and you can’t do that and it’s never been done before? I love it when someone says that no one has ever done this before, because then when I do it that means that I’m the first one that has…

December 12, 2015 by Daniel P. Clark

Ruby: Arrays by Example

Arrays are Ruby’s most used collection type. I will use very little description as I give examples for the many different ways to work with Arrays. Different ways to create an empty Array [] Array.new Array[] # same as :new Array(nil) # tries converting to an Array first and insures an Array result %w^^ #…

December 11, 2015 by Daniel P. Clark

Faith Defined

The meaning of the word faith has been broken by media and many in society. It’s become more synonymous with “magical” wishful thinking. “You keep using that word; I do not think it means what you think it means”. Michael Ramsden has quite well expressed the rational behind the typical understanding of faith. In the…

November 27, 2015 by Daniel P. Clark

Iterative Evaluation

In computer programming, an iterator is an object that enables a programmer to traverse a container, particularly lists. [1][2][3] -Wikipedia Gatcomb, Joshua. “Understanding and Using Iterators”. Perl.com. Archived fromthe original on 2005-06-16. Retrieved 2012-08-08. A user-defined iterator usually takes the form of a code reference that, when executed, calculates the next item in a list…

November 13, 2015 by Daniel P. Clark

Rails Rumble – the Experience

Rails Rumble is a yearly programming challenge. Each team is given 48 hours to complete and publish a website written in Ruby. You are permitted solo entry or up to 4 people as a team. You can do no coding of the project beforehand, but you can draw up and discuss plans as much as…

September 21, 2015 by Daniel P. Clark

Introspection by Design in Ruby

If I have one pet peeve in Ruby it’s knowing state at a certain point in the program’s process. Sure they make plugins for advanced diagnosis of this. And when you start out learning to program it’s common practice to use puts everywhere to see what’s going on. But this causes a lot of back…

July 25, 2015 by Daniel P. Clark

Play HD Youtube from the Raspberry Pi Command Line

Quick tip for most Linux distros. You can just use the mpv player to play a Youtube video from the command line. It’s a take off on mplayer2, and it has quvi built in. Unfortunately it’s not available for the Raspberry Pi architecture. Now the Raspberry Pi has some pretty good graphics built in. But…

July 23, 2015 by Daniel P. Clark

Ruby on the Raspberry Pi (free distro image)

I’ve customized my own Raspberry Pi distro (Raspbian) with Ruby 2.2.2 on it. It’s available for download for you to use. Here are the details. 4 GB image with 370Mb of free space at a download size of 1.9Gb DOWNLOAD Custom Ruby 2.2.2 on Raspbian Distro (ruby_rpi.img.bz2) User: pi Pass: raspberrypi Checksum: md5sum ruby_rpi.img.bz2 53637c11e3115381ac5867391f527f75…

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