The link following is referring to the SlideShare for Darrell Ulm saved presentations containing slide shows for Computer Science, Apache Spark, Python, Software Dev., parallel algorithms, and Drupal. Also put links to saved slides for Apache Spark, Hadoop, and Drupal.
Github is taking over the online software development repository sphere, and certainly have a huge market share of all online managed software projects, Open Source and proprietary.
Here is the Github account profile page with source code in C#, C/C++, PHP, ASM and others for Darrell Ulm and other links to this information can be found at the following: Profile, Tumblr and Blogger.
GitHub is a great tool for software development making most tasks more streamlined and helping multi-developer projects come together more cleanly with a smooth workflow.
The link below is for the Drupal Profile for Darrell Ulm, a Drupal user and code contributor for over 10 years.
The profile here Drupal Profile link for Darrell Ulm, contains information about projects such as the project using the Google API for Books (i.e. Google Books), content access restriction modules such as IP Path Access and FileField Role Limit, and other modules coded primarily in PHP/MySQL.
Also have Acquia Certified Developer status now as can be seen here.
This is a link to a contributed Drupal module coded by Darrell Ulm in PHP for Drupal which uses the Google Books API to pull Google Books data into Drupal for use as a Drupal Text Filter.
Link shows past work, much has moved to GitHub for Darrell Ulm.
For work that was done further back before GitHub, some information is at: Darrell Ulm, Open Source Software profile at OpenHub, which is an interesting site to show open source contributions.