Stop using telescopes to hunt imaginary bugs.

How to avoid an easy pitfall when deferring periodic jobs for the future through this popular interface.

Implementing a custom version of a very useful jUnit utility.

A simple Scala API for “pure” rational numbers, covering some nice features of the language for novices.

I built a tail-recursive method in Scala that blows up the JVM's stack.

Showing a way to present Cantor’s Diagonalization that drives the point stronger than a generic real number sequence.