January 25, 2012 by Chris on Tidbits

RT @desertdingo: #Dakar 2012 c…

RT @desertdingo: #Dakar 2012 crashes and “incidents” – breathtaking http://t.co/qiyaUTOE

January 25, 2012 by Chris on Tidbits

“she almost died of AIDS, but …

“she almost died of AIDS, but then I killed her on my Harley” http://t.co/LHRrG0jy Great line from a great article

January 15, 2012 by Chris on Tidbits

Various #Dakar 2012 pics: http://t.co/ABGJmgU8 http://t.co/RPgfggs7 http://t.co/Sb6F976r http://t.co/1466vLY6

January 14, 2012 by Chris on Tidbits

This reminds me of when I was a teenager, my brothers and I built an igloo by filling 5 gal buckets with compacted snow http://t.co/9mboiIzE

January 13, 2012 by Chris on Tidbits

I liked a @YouTube video http://t.co/1mO8YJ87 manualist plays guns n roses – sweet child o’ mine!

These are my links for July 20th through July 24th:

Ask HN: Best-architected open-source business applications worth studying? | Hacker News -
Monospaced Programming Fonts with Ligatures | Hacker News -
The language of choice - Propositional logic was discovered by Stoics around 300 B.C., only to be abandoned in later antiquity and rebuilt in the 19th century by George Boole’s successors. One of them, Charles Peirce, saw its significance for what we now call logic circuits, yet that discovery too was forgotten until the 1930s. In the ’50s John McCarthy invented conditional expressions, casting the logic into the form we’ll study here; then in 1986 Randal Bryant repeated one of McCarthy’s constructions with a crucial tweak that made his report “for many years the most cited paper in all of computer science, because it revolutionized the data structures used to represent Boolean functions” (Knuth).1 Let’s explore and code up some of this heritage of millennia, and bring it to bear on a suitable challenge: playing tic-tac-toe.
Then we’ll tackle a task that’s a little more practical: verifying a carry-lookahead adder circuit. Supposedly logic gets used all the time for all kinds of serious work, but for such you’ll have to consult the serious authors; what I can say myself, from working out the code to follow, is that the subject offers a fun playground plus the most primitive form of the pun between meaning and mechanism.

You’re encouraged to read with this article’s code cloned and ready