loilo

/**
 * Export all data from an IndexedDB database
 *
 * @param {IDBDatabase} idbDatabase The database to export from
 * @return {Promise<string>}
 */
export function exportToJson(idbDatabase) {
  return new Promise((resolve, reject) => {
    const exportObject = {}
    if (idbDatabase.objectStoreNames.length === 0) {

john-doherty

/**
 * Removes invalid XML characters from a string
 * @param {string} str - a string containing potentially invalid XML characters (non-UTF8 characters, STX, EOX etc)
 * @param {boolean} removeDiscouragedChars - should it remove discouraged but valid XML characters
 * @return {string} a sanitized string stripped of invalid XML characters
 */
function removeXMLInvalidChars(str, removeDiscouragedChars) {

    // remove everything forbidden by XML 1.0 specifications, plus the unicode replacement character U+FFFD
    var regex = /((?:[\0-\x08\x0B\f\x0E-\x1F\uFFFD\uFFFE\uFFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]))/g;

gregkorossy

function Semaphore(max) {
  var counter = 0;
  var waiting = [];
  
  var take = function() {
    if (waiting.length > 0 && counter < max){
      counter++;
      let promise = waiting.shift();
      promise.resolve();
    }

servel333

 Based on https://stackoverflow.com/a/31632215/761771

const reduceOp = function(args, reducer){
  args = Array.from(args);
  args.pop(); // => options
  var first = args.shift();
  return args.reduce(reducer, first);
};

snorfalorpagus

Using distutils and build_clib to build a C library

This repository demonstrates how to build a C library that is included in the module distribution.

To build the C library:

python setup.py build_clib

jung-kim

"use strict";

let looper = (callback) => {
  let n = 2000000;
  while (n > 0) {
    callback(n);
    n--;
  }
}

urin

@echo off
::
:: logrotate.bat - Log rotation for windows
::
:: Usage: logrotate.bat filename maxfilecount [maxfilesize]
::
::   filename    : The file name to rotate.
::   maxfilecount: Number of backup files.
::   maxfilesize : Rotated if the size of file exceeds specified size.
::                 (Default is 0. Unit notation is available (K, M and G))

ericremoreynolds

class KeyifyList(object):
    def __init__(self, inner, key):
        self.inner = inner
        self.key = key

    def __len__(self):
        return len(self.inner)

    def __getitem__(self, k):
        return self.key(self.inner[k])

robertripoll

This code has been moved to a GitHub repository with the corresponding license. https://github.com/UngarMax/TelnetServer

erikvip

Import & Export Cygwin List of installed Packages

If you want to go from 32 to 64 bit Cygwin but keep all the packages[1], you might find yourself in a spot where you would like to export the list of cygwin packages and also be able to install cygwin with all these packages again. I will tell you how. Open your Cygwin shell and enter

cygcheck -c -d | sed -e "1,2d" -e 's/ .*\$//' > packagelist

This will simply dump a list of installed packages. To install Cygwin 64 with these packages selected, download setup-x86_64[2] and execute it with the command line parameters

./setup-x86_64 -P `awk 'NR==1{printf \$1}{printf ",%s", \$1}' packagelist`