winguse

# convert flac files in current directory to Apple loss-less codec.
function flac2alac {
    for f in *.flac; do
        ffmpeg -i "$f" -acodec alac -vsync 2 -c:v copy -metadata COMMENT= -y "${f%.flac}.m4a"
        #-map_meta_data $f:${f%.flac}.m4a;
    done
}

winguse

const LOG_LEVELS = ['DEBUG', 'INFO', 'WARN', 'ERROR']
const [LOG_DEBUG, LOG_INFO, LOG_WARN, LOG_ERROR] = LOG_LEVELS;
const LOG_LEVEL = LOG_DEBUG;

function makeLogFunc(level, func = console.log) {
  return LOG_LEVELS.indexOf(level) >= LOG_LEVELS.indexOf(LOG_LEVEL) ? (...msg) => {
    const now = new Date().toLocaleString();
    func(...[now, level, ...msg]);
  } : () => {};
}

winguse

const fetch = require('node-fetch');
const { deepStrictEqual } = require('assert');

function ipv4ToInt(ip) {
  return ip.split('.').reduce((acc, cur) => acc << 8 | +cur, 0);
}

function intToIpv4(i) {
  return `${i >>> 24}.${i >>> 16 & 0xff}.${i >>> 8 & 0xff}.${i & 0xff}`;

winguse

const p = 0.723;

function oldRandom() {
	return Math.random() < p ? 1 : 0;
}

const table = [[1, 2], [2, 3], [1, 3]];
let flag = 0;

function newRandom() {

winguse

object Application {
  case class CsvLine(values: List[String] = Nil, inQuote: Boolean = false, buff: List[Char] = Nil)

  @tailrec
  def parseCsvLine(line: CsvLine, remains: List[Char]): List[String] = (line, remains) match {
    case (CsvLine(values, false, buff), Nil) =>
      values :+ buff.mkString

    case (CsvLine(values, true, buff), '"' :: Nil) =>
      values :+ buff.mkString

winguse

import java.util.{Timer, TimerTask}

import akka.actor.{Actor, ActorSystem, Props}
import akka.testkit.{ImplicitSender, TestKit}
import org.scalatest.{BeforeAndAfterAll, Matchers, WordSpecLike}

import scala.concurrent.{Future, Promise}
import scala.util.Try

winguse

Two files:

• /etc/usb_modeswitch.d/rtl8821cu
• /usr/share/usb_modeswitch/0bda:1a2b

TargetVendor=0x0bda
TargetProduct=0x1a2b
StandardEject=1

winguse

ip6tables -A FORWARD -p tcp --tcp-flags RST RST -j DROP
iptables -A FORWARD -p tcp --tcp-flags RST RST -j DROP

winguse

const asyncHooks = require('async_hooks');

const contextStore = new Map();

class Context {
  constructor() {
    this.id = Math.random();
  }
}

winguse

/* ------------ monkey patching  ------------ */
const http = require('http')

const originalServerEmit = http.Server.prototype.emit;
http.Server.prototype.emit = function (event) {
  if (event === 'request') {
    // setup the context here as the root of the execution tree
    setContext();
  }
  return originalServerEmit.apply(this, arguments)