TIL, there's a way to use indents to represent S-expressions
https://docs.racket-lang.org/sweet/index.html
Knotty: A domain-specific language for knitting patterns
51–57 of 57 posts
Re: Knotty: A domain-specific language for knitting patterns
#52This is great, but it’s entirely disqualifying that it isn’t called Purl.
Oh, the missed opportunities, like a little "ribbing" for the versions :^)
Version 1: Knit
Version 2: Purl
Re: Knotty: A domain-specific language for knitting patterns
#53I'd still like to see some 2-seams-only T-shirts as should be straight-forward on a sufficiently-flexible tube knitting machine: seams down along the bottom of the arms continuing to the hips, so there's no seam around the shoulders.
Just double up columns appropriately; maybe the seam doesn't even have to go all the way down.
But that column count is out of reach for home style machines.
Re: Knotty: A domain-specific language for knitting patterns
#54Earlier quoted context omitted.
From a computer-science theoretic view, any any recursively enumerable transform is computing. It's pretty easy to see the translation between a Jaquard loom and an abstract Turing machine. Just because it smells of machine oil and lanolin instead of ozone and magic smoke doesn't mean an automated loom and a modern computer are not essentially the same device, mathematically speaking.
> Just because it smells of machine oil and lanolin instead of ozone and magic smoke The magic smoke I've smelled before specially with a burnt cap but do computers really smell of ozone???
Oh, yes. Real computers do, with CRTs. :)
Re: Knotty: A domain-specific language for knitting patterns
#55Earlier quoted context omitted.
That's a bit like saying that welding and screwing pieces of metal together are 'essentially identical'.
If you are drawing up blueprints for a machine the two are essentially identical. You choose whichever makes sense for the joint you need, but they are essentially identical on the blueprint. If you are making the card reader for automated machines, knitting, weaving, and playing a piano are virtually identical - you just move some lever in response to a hole. Someone working on a different part of the machine cares…
This reminds me of the Citycorp Center near-disaster:
> LeMessurier's original design for the chevron load braces used welded joints. To save money, Bethlehem Steel proposed changing the construction plans to use bolted joints, a design modification accepted by LeMessurier's office but unknown to the engineer himself until later.
> With the tuned mass damper active, LeMessurier estimated that a wind capable of toppling the building had a one in fifty-five chance of happening any year. But if the tuned mass damper could not function due to a power outage, a wind strong enough to cause the building's collapse had one in sixteen chance of happening any year.
https://en.m.wikipedia.org/wiki/Citicorp_Center_engineering_...
Re: Knotty: A domain-specific language for knitting patterns
#56Earlier quoted context omitted.
If you are drawing up blueprints for a machine the two are essentially identical. You choose whichever makes sense for the joint you need, but they are essentially identical on the blueprint. If you are making the card reader for automated machines, knitting, weaving, and playing a piano are virtually identical - you just move some lever in response to a hole. Someone working on a different part of the machine cares…
This reminds me of the Citycorp Center near-disaster: > LeMessurier's original design for the chevron load braces used welded joints. To save money, Bethlehem Steel proposed changing the construction plans to use bolted joints, a design modification accepted by LeMessurier's office but unknown to the engineer himself until later. > With the tuned mass damper active, LeMessurier estimated that a wind capable of toppli…
1/55 chance of toppling over every year still sounds pretty bad..
Re: Knotty: A domain-specific language for knitting patterns
#57Earlier quoted context omitted.
This reminds me of the Citycorp Center near-disaster: > LeMessurier's original design for the chevron load braces used welded joints. To save money, Bethlehem Steel proposed changing the construction plans to use bolted joints, a design modification accepted by LeMessurier's office but unknown to the engineer himself until later. > With the tuned mass damper active, LeMessurier estimated that a wind capable of toppli…
1/55 chance of toppling over every year still sounds pretty bad..
That was his "oh shit" re-calculation. The welded the joints in secret at night and it's supposedly been safer since.