VictorTaelin

Solving SAT via interaction net superpositions

I've recently been amazed, if not mind-blown, by how a very simple, "one-line" SAT solver on Interaction Nets can outperform brute-force by orders of magnitude by exploiting "superposed booleans" and optimal evaluation of λ-expressions. In this brief note, I'll provide some background for you to understand how this works, and then I'll present a simple code you can run in your own computer to observe and replicate this effect. Note this is a new observation, so I know little about how this algorithm behaves asymptotically, but I find it quite

VictorTaelin

// A nano dependent type-checker featuring inductive types via self encodings.
// All computation rules are justified by interaction combinator semantics,
// resulting in major simplifications and improvements over old Kind-Core.
// Specifically, computable annotations (ANNs) and their counterpart (ANN
// binders) and a new self encoding based on equality (rather than dependent
// motives) greatly reduce code size. A more complete file, including
// superpositions (for optimal unification) is available on the
// Interaction-Type-Theory repository.
// Credits also to Franchu and T6 for insights.

neurosnap

/*
* This is an experimental view library that would compete with react, svelte, qwik.js, vue.js etc.
*
* Implementation reference: https://git.sr.ht/~erock/alpfx
*
* Features:
*  - Instead of `view = func(state)` we have `view = func(event)`
*    - This paradigm shift will:
*      - make prop mgmt (e.g. when to update component) more manual
*      - animations easier (events or transitions are sent to the component that the end-user

senderle

So you want to modify the text of a PDF by hand...

If you, like me, resent every dollar spent on commercial PDF tools, you might want to know how to change the text content of a PDF without having to pay for Adobe Acrobat or another PDF tool. I didn't see an obvious open-source tool that lets you dig into PDF internals, but I did discover a few useful facts about how PDFs are structured that I think may prove useful to others (or myself) in the future. They are recorded here. They are surely not universally applicable --
the PDF standard is truly Byzantine -- but they worked for my case.

stopachka

use std::collections::HashMap;
use std::fmt;
use std::io;
use std::num::ParseFloatError;
use std::rc::Rc;

/*
  Types
*/

JoeyBurzynski

58 bytes of CSS to look great nearly everywhere

When making this website, i wanted a simple, reasonable way to make it look good on most displays. Not counting any minimization techniques, the following 58 bytes worked well for me:

main {
  max-width: 38rem;
  padding: 2rem;
  margin: auto;
}

wybiral

#include <BLEAdvertisedDevice.h>
#include <BLEDevice.h>
#include <BLEScan.h>

const int PIN = 2;
const int CUTOFF = -60;

void setup() {
  pinMode(PIN, OUTPUT);
  BLEDevice::init("");

hediet

type StringBool = "true"|"false";


interface AnyNumber { prev?: any, isZero: StringBool };
interface PositiveNumber { prev: any, isZero: "false" };

type IsZero<TNumber extends AnyNumber> = TNumber["isZero"];
type Next<TNumber extends AnyNumber> = { prev: TNumber, isZero: "false" };
type Prev<TNumber extends PositiveNumber> = TNumber["prev"];

krisselden

const fs = require('fs');
const path = require('path');
const spawn = require('child_process').spawn;
const FPS = 60;
const MICROSEC_PER_FRAME = Math.round(1000000 / FPS);
if (process.argv.length < 3) {
  console.log(`node ${path.relative('.', process.argv[1])} [DevToolsProfile]`);
  process.exit(1);
}
let traceFile = path.resolve(process.argv[2]);

tomhodgins

Element/Container Queries Reading List

Written by me

The Edge of CSS slides

• The Edge of CSS slides from talk given for DublinCSS, April 20 2017

CSS Element Queries Spec