sealedsins

Virtual Machine

Abstract virtual machine done in TypeScript. Originally intended as a backend for my visual novel browser engine, but dropped it in favor of a generic state machine.

domenic

Generic zero-copy ArrayBuffer usage

Most APIs which accept binary data need to ensure that the data is not modified while they read from it. (Without loss of generality, let's only analyze ArrayBuffer instances for now.) Modifications can come about due to the API processing the data asynchronously, or due to the API processing the data on some other thread which runs in parallel to the main thread. (E.g., an OS API which reads from the provided ArrayBuffer and writes it to a file.)

On the web platform, APIs generally solve this by immediately making a copy of the incoming data. The code is essentially:

function someAPI(arrayBuffer) {
  arrayBuffer = arrayBuffer.slice(); // make a copy

rbuckton

__classPrivateFieldSet

var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
    if (kind === "method") throw new TypeError("Private method is not writable");
    if (kind === "accessor" && !f) throw new TypeError("Private accessor was defined without a setter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
    return (kind === "accessor" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};

davidmurdoch

// requires the types from: https://gist.github.com/davidmurdoch/3145903f3a267543568225c68dcc325b

// this is *very* limited in string size at the moment
type Data<T extends string> = {
    value: DATA<T>,
    // @ts-ignore: Ignore type instantiation depth errors as we have already limited our depth
    toBuffer: () => ToUInt8<Hex<Trim<T, "0x">>>
}

type HexLookUp = {"00": 0, "01": 1, "02": 2, "03": 3, "04": 4, "05": 5, "06": 6, "07": 7, "08": 8, "09": 9, "0a": 10, "0b": 11, "0c": 12, "0d": 13, "0e": 14, "0f": 15, "10": 16, "11": 17, "12": 18, "13": 19, "14": 20, "15": 21, "16": 22, "17": 23, "18": 24, "19": 25, "1a": 26, "1b": 27, "1c": 28, "1d": 29, "1e": 30, "1f": 31, "20": 32, "21": 33, "22": 34, "23": 35, "24": 36, "25": 37, "26": 38, "27": 39, "28": 40, "29": 41, "2a": 42, "2b": 43, "2c": 44, "2d": 45, "2e": 46, "2f": 47, "30": 48, "31": 49, "32": 50, "33": 51, "34": 52, "35": 53, "36": 54, "37": 55, "38": 56, "39": 57, "3a": 58, "3b": 59, "3c": 60, "3d": 61, "3e": 62, "3f": 63, "40": 64, "41": 65, "42"

davidmurdoch

type Cast<T, U> = T extends U ? T : U;
type Prop<T, K> = K extends keyof T ? T[K] : never;
type HexChars = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" | "A" | "B" | "C" | "D" | "E" | "F" | "a" | "b" | "c" | "d" | "e" | "f";
type HexPairs = `${HexChars}${HexChars}`;

/**
 * returns a Tuple of hex pairs (bytes), or `never` if the input doesn't contain an even number of hex characters
 */
type Hex<S extends string> =
  S extends "" ? [] :

winocm

import time
import psutil
import multiprocessing as mp
from multiprocessing import Process
from ctypes import *

threadpin = CDLL(".\\threadpin.dll")
print(threadpin.thread_assign_to_processor) 

def f(thread, duty, freq, q):

WebReflection

FE vs BE

TL;DR enough of this kind of nonsense

---

I've been in the field for ~20 years and started as BE developer, and this is a reference for people thinking that because they are on the BE side, they're somehow entitled to:

• earn more money
• feel superior about FE developers
• joke about JavaScript or minimize the FE effort in any way

WebReflection

About This Gist

This gist summarizes the handleEvent(event) pattern features, something standard, something described by me many times, written in my tiny book, tweeted about, and yet it's something most Web developers ignore.

The handleEvent ASCII Doodle

                  ┌---------------------------------┐
var handler = {   | any object that inherits or     |

bgrins

#!/bin/bash
# this switches turn some bugs into errors
#set -o errexit -o pipefail -o noclobber -o nounset

MOZILLA_CENTRAL=$PWD
if [ ! -f $MOZILLA_CENTRAL/test.mozbuild ]; then
  echo "Error: this doesn't look like an m-c directory."
  exit 1
fi

sandersn

> [email protected] check /home/nathansa/types-publisher
> node bin/check-parse-results.js

Using local Definitely Typed at ../DefinitelyTyped.
Typings already defined for akumina-core (Akumina) as of 1.1.1 (our version: 4.5)
  To fix this:
  git checkout -b not-needed-akumina-core
  yarn not-needed akumina-core 1.1.1 https://github.com/akumina/AkuminaDev "Akumina"
  git add --all && git commit -m "akumina-core: Provides its own types" && git push -u origin not-needed-akumina-core