## Tupper’s Self-Referential Formula

A couple of days ago I stumbled upon a rather old video post from Numberphile which talked about a formula that could plot itself, called the Tupper’s Self-Referential Formula:

## The Snake game

Wow, almost a full year since my last post.

Anyway, here’s a little piece of code that (kind of) mimics the Blockade game, written in VB.NET.
Not much to say or comment about it, but that it is not a finished product and it’s just the result of an extremely boring afternoon… enjoy! […]

## Music Identification (Fingerprinting)

Between the years 2009 and 2012 I worked on a project to create a fast and reliable music identification programÂ (fingerprinting) for a potential client… from scratch! […]

## Factorial calculation algorithms

Eventually, at some point in your coding career, you’ll need to calculate the factorial of a number.

This, of course, with most modern programming languages shouldn’t be a problem… unless you need to calculate the factorial of any real number, even if it is a fractional number. […]

## Drawing lines in the Console (or elsewhere)

I remember once needing to code my own drawing functions for an HP48 and not having a clue how to draw line.

My first implementation worked by determining the delta increment that should be applied to both x and y from the starting (x0, y0) point to the final location (x1, y1).
Although this worked, it resulted in horrendously looking jagged lines.
To make matters worst, I also had to calculate the sign of the increments, based on the slope of the line, which added complexity to the code, making it quite ugly and slow.

Then a couple of days later I realized that a line is nothing more than the radius of a circle!
That was quite an eureka moment for me.