Author Archives: dru

Lisp Match

(DEF MATCH (PATTERN ASSERTION) (COND ((EQUAL PATTERN ‘?) T) ((AND (ATOM PATTERN) (EQUAL PATTERN ASSERTION)) T) ((ATOM PATTERN) NIL) ((ATOM ASSERTION) NIL) (T (AND (MATCH (FIRST PATTERN) (FIRST ASSERTION)) (MATCH (REST PATTERN) (REST ASSERTION)))))) FIRST < – CAR REST

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Rob Barton Quote

“Systems programmers are the high priests of a low cult.”   Robert “Bob” Barton (1967)

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ARPA NETWORK 1973

Almost 40 years ago.

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The Old Dr. Dobbs

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Experience one of my first big computers: the ATT 3B1

A long time ago now, in the 1990 or 1991 timeframe, I bought an ATT 3B1. It was my first true Unix machine. I could tell you lots about it, but there is a Wikipedia page up for it already … Continue reading

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ubuntu – python – ImportError: cannot import name urandom

If you are on ubuntu and you get this bug, this might be because the python that you were using in a virtualenv was updated. ubuntu and some other distros may do this automatically. You can verify that this occurred … Continue reading

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Great article on Waterfall / The Power of Open Access to Information

First, someone in the agile camp actually reads the original description on ‘Waterfall’ from 1970. Surprise – it is really really close to agile. This is a great read. Hopefully, this will end a lot of the debates on terminology … Continue reading

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Neat Chart on Schumpeter Cycles

Click to enlarge the chart. Pretty interesting chart. When I was old enough to be seriously looking for work, it was right around the 1990 low. It was a pretty tough time to find interesting work. You can read more … Continue reading

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