@amoroso #commonlisp #lisp
there is also its "Exotic Language of the Month Club" on page 99: CRL, a knowledge representation language (implemented in Common Lisp). Then the PowerLisp ad on page 62. SCOOPS on page 49ff. The KEEConnection ad on page 23ff. The "Personal Consultant Plus" (written in PC Scheme) ad from TI with support for the TI Explorer Lisp Machine on page 6/7. The GoldWorks ad on page 145. Plus: a bunch of Prolog articles...

In 2009, I had to cancel a scheduled keynote talk at the European Lisp Symposium (ELS) in Italy because I was due to be in surgery at that exact time for my thyroid cancer. (Surgery went well, and I've seemed thankfully free of it since.) They were kind enough to ask me to speak in Lisbon in 2010 instead. But I didn't at the time, in 2009, speak publicly about the surgery or the cancer. Instead I made a vague excuse about an illness in the family (not technically untrue) being the reason I couldn't do the talk.

On the evening before the surgery, I wrote a somewhat metaphorically cryptic post to my blog that I figured would at least capture my apprehension in case the surgery did not go well, or even if it did, I suppose. It's still interesting to have a window back into my thoughts.

https://netsettlement.blogspot.com/2009/05/over-edge.html?

Back to modern day, I do have a planned procedure (not tomorrow, not dire and far more routine, so not to worry, but please don't ask for additional details just now) that I've been reflecting about just a bit.

Though in all honesty, I and all of us are probably at more risk just walking around on the streets in our emerging fascism (here in the US, though other places are not exactly immune either), and that's on my mind all the time now as well. Any one of us could become an unperson, certainly anyone with decent ethics anyway, as that seems to almost be the criterion for who they're going after.

The tanka I wrote is not specific to one thing in particular, just the sum total of various such things that point to the ephemeral nature of each of our existences.

It's both frightening and infuriating to live in a society where we are at risk merely because of our very existence or nature being seen as a crime.

There may be some among us that don't feel at risk. I wish I could say that's good. But I worry it's obliviousness/denial, or privilege, or something darker, perhaps even being comforted by being on the winning side of bigotry. Maybe give it some thought, because I don't want people to be disempowered by what's afoot, but neither should they feel it's someone else's problem. We have real problems that need to really be addressed. It's a time to feel uncomfortable because no one should be comfortable with what's happening. It's a time for people to empathize and contribute to getting the world back onto an even keel.

Meanwhile we are all individually fragile, too. I had a philosophy class in which the professor told us we could not say with certainty that we would have lunch with someone tomorrow. The future is intrinsically less than certain, we're just talking degree here. But the things going on now are good cause to appreciate those we love, and make sure that we've got things in order in case things get wonky.

And even beyond the politics of the day, the state of climate is dire. I talk enough of that elsewhere, so won't belabor it, but its spectre is ever-present.

Still, it also makes it a time to live, not to put off living to some mythical future time when things will be better. (I wrote a different haiku about that earlier this evening as part of this same pondering.) Let's work toward creating a bright future, but let's also not fail to appreciate that today is all we know we have for sure. Make the best of it. And be the person you want others to remember fondly.

@rzeta0 #lisp #commonlisp

The main things you have learned: LISP is called "List Processor" for a reason, it is interactive (REPL) and extensible (macros).

Congratulations for completing the book!

Learning the basics of Haskell is a great next step!

@rzeta0
#CommonLisp is not minimal, because it wants to be "practical" and it comes from a tradition of very *rich* programming systems. It includes a library for meta programming, sophisticated interactive error handling, an interactive object system (CLOS) and a lot of other stuff integrated into the language. Stuff which one often needs when writing programs.

The main things you have learned: LISP is called "List Processor" for a reason, it is interactive (REPL) and extensible (macros).

@abuseofnotation
Yes, having spent a painful afternoon revising my approach, I guess so. I'll do an acl2 mutual-recursion like yours later.

The series version I experimented with today: https://codeberg.org/tfw/lineage-tracing/src/branch/master/lineage-tracing.lisp

lineage tracing, #programming #commonLisp #series
@jeremy_list @me

@jeremy_list I also wrote this #commonLisp one (rather than acl2) before looking at yours properly as a point of comparison.
(defun ancestorp
(a b f)
(loop
:with candidates := `(,a)
:for name := (pop candidates)
:for subtree := (assoc name f)
:if (member b (cdr subtree)) :return subtree
:else :Do
(setf candidates (append (cdr subtree) candidates))
:while candidates))