xk

//2014-02-10 jorge@jorgechamorro.com     happy numbers in C

#include<stdio.h>

unsigned sumaCuadrados (unsigned n) {
  unsigned d, r= 0;
  while (n) d= n % 10, r+= d*d, n/= 10;
  return r;
}

xk

//2014-02-10 jorge@jorgechamorro.com     concise happy numbers JavaScript

function happy (n) {
 var past= [];
 while (n= [].reduce.call(n.toString(), function (a,n) { return a+n*n }, 0))
   if (n === 1) return 1; else if (past.indexOf(n) >= 0) return 0; else past.push(n);
}

for (var i=0 ; i<=100 ; ++i) happy(i) && console.log(i);

xk

//2014-02-10 jorge@jorgechamorro.com   Happy Numbers JavaScript

function sumaCuadrados (n) {
  var d, r= 0;
  while (n) n-= (d= n % 10), r+= d*d, n/= 10;
  return r;
}

function isHappy (n) {
   while (n && n!=1 && n!=4 && n!=16 && n!=37 && n!=58 && n!=89 && n!=145 && n!=42 && n!=20)

xk

//2014-02-10 jorge@jorgechamorro.com     happy numbers

String.prototype.reduce= [].reduce;
Array.prototype.has= function has (n) { return this.indexOf(n) >= 0 };
Array.prototype.times= function (f,i) { for (i= this[0] ; i<=this[1] ; i++) f(i) };

function happy (n) {
  var past= [];
  while (1) {
    if ((n= n.toString().reduce(function(n,v){ return n+v*v },0)) === 1) return 1;

xk

//2014-02-09 jorge@jorgechamorro.com
//Cross-function var manipulation

#include <stdio.h>
#include <string.h>


void uno () {
 char* b= (char*) &b;
 while (strncmp("Ehh", b, 3)) b++;

xk

//2014-02-09 jorge@jorgechamorro.com
//stack frame garbage

#include <stdio.h>

void uno () {
 char a[18]= "GeorgeOfTheJungle";
}

void dos () {

xk

//2014-02-09 jorge@jorgechamorro.com
//Manipulate the stack frame return address

#include <stdio.h>
#include <string.h>


void uno () {
 char** r= (char**) &r+2;
 while (**r != '\x90') (*r)++;

xk

javascript:[].filter.call(document.getElementsByClassName("g-clTRght"), function (e) {
  return /^[0-9]+[hHmMsM]/.test(e.innerHTML);
}).forEach(function (e) {
  var r, h, p, hora, minuto, segundo;
  var txt= e.innerHTML;
  if (/^[0-9]+[hH]/.test(txt)) {
    r= /^([0-9]+)[hH] ([0-9]+)[mM]/.exec(txt);
    h= new Date(Date.now() + (r[1]*60*60*1000) + (r[2]*60*1000));
  }
  else if (/^[0-9]+[mM]/.test(txt)) {

xk

(function run () {
  
  //2013.09.27 jorge@jorgechamorro.com
  //Shows that node's timers are borken and often execute out of order
  
  console.log('\nBEGIN');
  var MAX= 666;
  var last= 0;
  var items= 0;
  var errores= 0;

xk

//plistread.js, 2012-12-30 jorge@jorgechamorro.com

var plist= require('plist');
var shell= require('child_process').exec;
var puts= console.log;

//process.argv[0] -> "node"
//process.argv[1] -> "plistread.js"
//process.argv[2] -> inputFile
//process.argv[3..n] -> property list keys