meagar

This is a really fast way to restore a large Postgres database by omiting the indexes and restoring them later (if necessary).

1. Dump database.

    pg_dump -Fc --no-owner my_db -f ~/my_db.dump
   

2. Create the summary files. One for the indexes and another for everything else.

pg_restore -l ~/my_db.dump | grep -v 'INDEX public' > ~/my_db.list

meagar

##JavaScript isn't threaded

• Synchronous code locks up the browser
• Asynchronous code frees up the browser but leads to...

##Async callback hell

"Return" values are no longer available to our synchronous code

meagar

/**
 * Include via a <script> tag and reload CSS files via ctrl-R without a full-page refresh.
 * Maintains your state, especially useful for JavaScript-based single-page apps
 *
 * Requires jQuery 1.6 or greater
 */

(function () {
  "use strict";

meagar

// Part 1

document.getElementById('the_div' ).addEventListener('click', function(){ log('the_div!')  }, true);
document.getElementById('the_list').addEventListener('click', function(){ log('the_list!') }, false);
document.getElementById('the_item').addEventListener('click', function(){ log('the_item!') }, true);

// Part 2

document.getElementById('the_div' ).addEventListener('click', function(){ log('the_div!')  }, false);
document.getElementById('the_list').addEventListener('click', function(){ log('the_list!') }, false);

meagar

var Person = function(name) {
   this.name = name;
};

// Part 2
Person.prototype.getName = function() {
   return this.name;
};

var thomas = new Person('Thomas');

meagar

Function.prototype.cachify = function () {
  var cache = {}, self = this;
  return function (arg) {
    if (arg in cache) {
      console.info('cache hit');
      return cache[arg];
    }
    return cache[arg] = self.call(self, arg);
  };

meagar

function logCar(car) {
  console.info("I'm a", car.color, car.make);
}

function Car(make, color) {
  this.make = make;
  this.color = color;
}

Car.prototype.log = function () { logCar(this); }

meagar

function isPrime( num ) {
  // everything but 1 can be prime
  var prime = num != 1;
  for ( var i = 2; i < num; i++ ) {
    if ( num % i == 0 ) {
      prime = false;
      break;
    }
  }
  return prime;