Conference Review - DevNexus 2017

I used to attend a lot of conferences. Back between 2008 and around 2012 I'd go to at least one (if not more) a year.  I've even spoken at a number...

Grails on Raspberry Pi Part 2 - Why Grails?

So why Grails on a Raspberry Pi?  It's a valid question and one that I hope to answer with this post.  If you're not familiar with Grails, perhaps...

Grails on Raspberry Pi Part 3 - Installing Groovy And Grails

The first step in getting working with Grails on the Raspberry Pi is, of course, installing Grails.  I've been somewhat dreading this post because...

Grails on Raspberry Pi Part 4 - Intro To GPIO

If you've missed the first three parts in this series you may want to check them out before proceeding:Part 1 Part 2Part 3Alright, now that you're...

A Better Way To Develop For The Raspberry Pi

Note:  I've dropped the "Grails on Raspbery Pi" intro to the title of these posts for the sake of brevity, but this post and most of the posts coming...

A Groovy Alternative To Java 8 Streams and Collectors

I recently read this article over at DZone about using Java 8 Streams and Collectors to manipulate and perform calculations on a list of integers....

Spark Java "Flash" Scope

One of the handiest features of Grails is the "flash" scope.  The flash scope is "A temporary storage map that stores objects within the session for...

A Closer Look At Sorting Algorithms

As I mentioned in a previous post, sorting algorithms typically play a large role in programming interviews.  Those who follow the traditional path...

Creating Your First Website On Raspberry Pi

In this post we'll create and deploy a simple website on the Raspberry Pi.  There are a few prerequisites that I've covered in some previous posts...

Brain Teaser: Calculate Max Stock Profit

I came across an interesting puzzle to solve via interviewcake: Suppose we could access yesterday's stock prices as an array, where:The values are the...

Brain Teaser: Split An Array Into Equal Parts

Here's another challenge that I came across recently:Given an array of integers greater than zero, find if it is possible to split it in two (without reordering...

Brain Teaser: Find The Missing Number

When I first saw this challenge I thought it would be a lot more difficult than it turned out to be.  Here is the challenge:Here's a list with numbers...