On my drive across PA I visited the mythic Centralia. You can read up on the modern ghost town in any number of places. So here I'll share my photos and feelings of the place.
Centralia is an unassuming grid of overgrown streets tucked between the Pennsylvania hills. When I …
read moreUUIDs are generally uncompressable. This is because their values can be anything and multiple UUIDs generaly don't repeat in a payload. So you may be surprised to learn that a JSON list of UUIDs compresses to 56% of their original size. Here's an example:
[
"572585559c5c4278b6947144d010dad3",
"b97ec0750f67468d964519e18000ccf6",
"c1c69970b9bc4c0a9266a3350a9b2ab1",
"2eb10805db484db7a196f89882d32142",
"4b3569aaac154195aaa5ea114eff6566",
"e253f04c1f414b7291e682ea465e8e19 …A life full of activity is a fulfilling one. So the saying doesn't go. I made it up. And now that I have a car in the City of Steel I can fill my days with activities beyond food festivals and coffee shops. Here is a list of adventures now …
read moreThis is a simple strategy for confirming that some values are shared between requests. There must be a more 'correct' way to inspect values in concurrent requests, but I was unable to find it. I normally use a debugger to set breakpoints, but there was no way to set a …
read moreI'm writing this post several months from when I visited Chaco Canyon. I visited Chaco Canyon in the first week of February on my drive up from Albuquerque to Monitcello. This was a beautiful drive.
I was listening to Brave New World as I passed valley and mountain. It just …
read moreYesterday I implemented a predicate to compute the min and max of a list. Today I'm doing the same, but now with constraints.
The code looks pretty much the same thanks to the handy min and max
constraints.
:- use_module(library(clpfd)).
min_and_max([V], A, B) :-
V #= A, V #= B.
min_and_max …As a fun exercise I implemented a predicate to calculate the minimum and maximum element of a list.
min_and_max([A], A, A).
min_and_max([H|R], N, X):-
min_and_max(R, RN, RX),
N is min(H, RN),
X is max(H, RX).
Next I wrote a version with last-call optimization.
min_and_max_2 …It's been a year since I've written any Mercury (the purely logic/functional programming language), but there's one feature I miss. It's nothing fancy, and certainly one of the less interesting features Mercury has to offer.
To understand this particular feature let's look at where other languages fail …
read moreHere are some photos from Redwoods National and State Parks, an hour and a half north of Eureka, CA.
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