[OS X TeX] TeXShop 4.53

Ettore Aldrovandi ealdrov at mail.math.fsu.edu
Mon Dec 7 22:23:04 CET 2020

> On Dec 7, 2020, at 15:51, koch at uoregon.edu wrote:
> One of my students works in Portland as a Macintosh programmer. He recently recommended
> 	UNIX, A History and a Memoir
> by Brian Kernighan, 2020, Kindle Direct Publishing.
> Kernighan discusses regular expressions in a story that begins as follows:
> ``One day in 1972 I was called by someone at the Labs who said 'I noticed that when I hold my new
> pocket calculator upside down, some of the numbers make letters; for example, 3 becomes E and
> 7 becomes L. I know yo

> u guys have a dictionary on your computer. It there any way
> you can tell me what words I can make on my calculator when I hold it upside down?'
> Kernighan then writes "Being in a research group, it felt good to help someone who had
> a really practical problem."
> He then prints the list of 263 words that grep and a regular expression produced. 
> Dick Koch


thanks, that’s a beautiful anecdote. Wasn’t Kernighan (or maybe Pike or Ritchie) who said: “when in doubt, use brute force?”


PS: Time to leave the thread alone. 
PPS: I’ll definitely get the book.

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