I just came across a blog post going over that old saw of Object Oriented Design, a square being a subclass of a rectangle ( Read more... )

I've been doing a lot of debugging lately, and have been using this bit of code to great effect:

from traceback import extract_stack, format_list
ti = 0.0

class rec:
    def __init__(self):
        self._his = []

def __setattr__(self, key, value):
        if key != '_his':
            self._his.append((key, value, ti, extract_stack()[:-1]))
        self ( Read more... )

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People seemed to not understand that these puzzles are collaborations between me and Oskar, even though he clearly explains it in the videos, so I did the presentation in this one.

There's a new interview with me about 3d printing, puzzles, and a few bits of other random stuff.

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This puzzle looks like a Rubik's Cube, but it allows some moves which clearly shouldn't be.

Somebody at Mozilla decided they need lots of 'true' random numbers.

My patience for this subject completely ran out about five years ago, so this post is going to show a complete lack of diplomacy. I would like to emphasize, in advance, that this is my honest, reasoned opinion, not said in anger, and that if you ask my opinion again in the future I ( Read more... )

City of Heroes has had some interesting issues with its gameplay, involving a character named Twixt using some tactics which made everybody hate him.

Several years ago I happened to be seated next to the designer of City of Heroes at an event where he won something. He was a pudgy guy, wearing big round glasses, with a white city of heroes t-shirt ( Read more... )

A random person asks about something they read on Wikipedia:

Example from wiki below:

http://en.wikipedia.org/wiki/Bram_Cohen

quote from site:

MojoNation allows people to break up confidential files into encrypted chunks and distribute those pieces on computers also running ( Read more... )

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From deep in the uncanny valley of the Rubik's Cube, it's the Uncanny Cube. At first blush this appears to be a slight variant, but it is quite profoundly and perversely different.

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This is Bram's Cube, an idea I'm very fond of. It's very interesting to solve, since the middle layer and everything else can be thought of independently and solved on their own, but that scrambles the part you weren't thinking of.