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About

Dan is a systems designer and technology integrator with experience in product design, dashboard and portal construction, technology education and making technology systems simultaneously more powerful and easier to use.. His previous projects include developing business applications, data creating visualizations and dashboards, vehicle routing and maintenance software and developing automated testing and deployment systems on AWS and other hosting platforms.

As an educator, Dan has taught at the Middle and High School, Undergraduate and Continuing Education in a college setting as well as done private training. He has spoken at technology conferences including Into the Box 2019.

Popular posts from this blog

Creating Stories and Tasks in Jira: Personas and our Software Development Team

Part of the CI/CD Development Series The next step is developing who is on our hypothetical development team. Given that it has a React front end and ColdFusion as the Server Side language, I came up with the following personas, all of which have their own needs and considerations for our development environment. I've listed all the jobs that need doing, not the people involved since, even on a small team or a team of one, these "hats" are all worn by someone, even if it's the same person. Personas for our Project Dev Ops Coordinator - The person responsible for smooth and accurate deployments CF Developer - The person responsible for the API and fulfillment code development and maintenance. React Developer - The person responsible for the front end development Database Coordinator - The person responsible for the schema, data, up time and, presumably the testing databases used by the developers. Lead Developer - The person responsible for coordinat...
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CF: Scripting amidst the tags

Recently I had to do a quick "utility" page where I needed to see how many files from a directory listing had been recorded into a database. I've been writing about 98% of my CF code in script syntax but, since it was quick and easy, I did this quickly in tags because it was outputting directly to the browser. In doing so, I made an interesting discovery in that, when you use closures, even in tag based pages, you can write cfscript. Here's the example Get the directory listing:  < cfset alljs = directoryList(expandpath( '/src' ), true , "path" , "*.js" )> Get the database listings and convert it to an array < cfquery name = "alljsQ" datasource = "blah" > select * from sitefiles where filename like '%.js%' </ cfquery > < cfset recordedFiles = valuelist(alljsQ.filename).listToArray()> Use a filter function to weed out the files I'd already recorded < cfset missingFiles = alljs.fi...
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Dynamically altering CSS Style Sheets in JS

 I recently had a project which was running unit tests in an ajax call and color coding a corresponding row in a table according to the results. The calls were being made, the tests were being run, the results returned and the correct <div> being identified to change the background color. The problem: a CSS class in Bootstrap had such a particular specificity that it was overriding an effort I made to change the background color of the table row using classes.  After searching how to dynamically alter a CSS style sheet I came upon this solution.  The document.styleSheets property is a collection of the style sheets attached to the page. I needed to loop over them, identify the one I wanted to access since they can appear in any order, and then delete the rule I wanted (it wasn't being used anywhere. If it was, this would be much more complicated). Also since, it wasn't a true array, the each() method wasn't available. Throw back to a for loop. for(var x=0; x<docu...
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