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.
A storm rolled in before I left Apple Valley.
One thing the West has that the East doesn't is independent drive-thru restaurants and beverage stands. Ever since New Mexico I've been seeing coffee trucks and smoothie wagons. I've also seen a good number of drive-thru Mexican restaurants. All of them …
read moreWe headed out for a casual day of hiking in the Kanab region. We visited the Toadstools Hoodoos, the Belly of the Dragon, and Coral Pink Sand Dunes State Park.
The first is a short hike, with just a few cool rock formations. I was really hoping for more of …
read moreI traveled to Bryce Canyon the 21st of February. I don't have much to say right now so here are some photos.
We went on a hike down into the canyon. It was pretty icy. Here you can see some wonderful colors between the red stone and the white snow …
read moreFriday evening we stepped out to take in the foggy full-moon. I'm not one for superstition but the previous full moon claimed SOPHIE, this one was to claim its own victim, albeit mechanical. Unsuspecting, we spent a good half-hour watching the local cats play tag in the moonlight.
The …
read moreI woke up today in Carlsbad, NM. I was to drive west through the Lincoln national forest and across the Sacramento mountains. I began the day late since I was waiting for my Airbnb's dryer to finish its task.
So I headed out to La Patrona to grab a breakfast …
read moreSince January I've been using Xonsh as my main shell on both my work and personal machines. In this post I will describe what I liked and what I didn't. TLDR; I liked that I found myself scripting more under Xonsh, but it can be slow and inconvenient as a …
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