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Javascript Sudoku Puzzle Generator

In this demo, backtracking algorithm is used for generating the sudoku. Difficulty and solvability is totally random as I randomly left a number of hints from a full-filled board.

A Pen by Mustafa Enes on CodePen.

License.

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(function () {
  'use strict'

  var fs = require('fs')
  var jsdom = require('jsdom')
  var https = require('https')


  // Prepare array of song objects
  var list = fs.readFileSync('list.txt', 'utf8')

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{
  "patterns": [
    {
      "type": "path",
      "term": "/some/path\\$/gi",
      "transform": {
        "path": "/some/other/path/file.x",
        "name": "lorem",
        "type": "jpeg"
      }

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{
  "patterns": [
    {
      "type": "path",
      "term": "/some/path\\$/gi",
      "transform": {
        "folderPath": "/some/other/path",
        "name": "lorem",
        "fileType": ".jpeg"
      }

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Calculate PI digits

A little late to the party but here's a widget you can calculate as many digits of π as you want (actually, do not try with huge parameters).

Update: It's now working concurrently with as many workers as cpu cores. So it gets faster if your computer has more cpus.

A Pen by Mustafa Enes on CodePen.

License.

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BIN = ./node_modules/.bin
DIST = ./dist
SRC = ./src

HTML_INPUT = $(SRC)/index.html
HTML_OUTPUT = $(DIST)/index.html

CSS_INPUT_DIR = $(SRC)/stylesheets
CSS_INPUT = $(CSS_INPUT_DIR)/style.css
CSS_OUTPUT_MIN_DIR = $(DIST)

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var t = e => atob(e.split(':').map(e => String.fromCharCode(parseInt(e,2))).join(''))
window[t('1011010:1101101:1010110:110000:1011001:110010:1100111:111101')](t('1100001:1001000:1010010:110000:1100011:1000100:1101111:1110110:1001100:110010:1001110:1110110:1011010:1000111:1010110:1110111:1011010:1010111:110100:1110101:1100001:1010111:111000:1110110:1100011:1000111:1000110:110010:1100010:1000111:111001:110010:1100011:110010:1110011:1110110:1100011:1000111:1010110:1110101:1001100:110001:1101000:1110100:1100001:1101100:1000010:1010000:1010010:1010001:111101:111101'), JSON.parse(t('1100101:1111001:1001010:1110100:1100010:110010:1010010:1101100:1001001:1101010:1101111:1101001:1100010:1101101:111000:1110100:1011001:110010:111001:1111001:1100011:1111001:1001010:111001')))

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function EventEmitter(options) {
  this._listeners = []
}

EventEmitter.prototype.on = function(event, handler) {
  this._listeners[event] = this._listeners[event] || []
  this._listeners[event].push(handler)
}

EventEmitter.prototype.off = function(event, handler) {

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function EventEmitter(options) {
  this._listeners = {}
}

EventEmitter.prototype.on = function(event, handler) {
  this._listeners[event] = this._listeners[event] || []
  this._listeners[event].push(handler)
}

EventEmitter.prototype.off = function(event, handler) {

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function toBinary(plainText) {
  return plainText.split('').map(c => {
    return ('0'.repeat(BIT_COUNT) + c.charCodeAt(0).toString(2)).slice(-BIT_COUNT)
  })
}

function generateKey(len) {
  return ' '.repeat(len * BIT_COUNT).split('').reduce(p => p + ~~(Math.random() * 2), '')
}