zhengjia

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')

chitchcock

Stevey's Google Platforms Rant

I was at Amazon for about six and a half years, and now I've been at Google for that long. One thing that struck me immediately about the two companies -- an impression that has been reinforced almost daily -- is that Amazon does everything wrong, and Google does everything right. Sure, it's a sweeping generalization, but a surprisingly accurate one. It's pretty crazy. There are probably a hundred or even two hundred different ways you can compare the two companies, and Google is superior in all but three of them, if I recall correctly. I actually did a spreadsheet at one point but Legal wouldn't let me show it to anyone, even though recruiting loved it.

I mean, just to give you a very brief taste: Amazon's recruiting process is fundamentally flawed by having teams hire for themselves, so their hiring bar is incredibly inconsistent across teams, despite various efforts they've made to level it out. And their operations are a mess; they don't real

josephg

# This script watches for changes in a document and constantly resaves a file
# with the document's contents.
#
# Usage: coffee saver.coffee -d <DOCNAME> [--url http://somehost:8000/sjs] [-f filename]

client = require('share').client
fs = require('fs')

argv = require('optimist')
	.usage('Usage: $0 -d docname [--url URL] [-f filename]')

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

ndarville

Business Models

Advertising

Models	Examples
Display ads	Yahoo!
Search ads	Google

campeterson

Aviation

National Flight Data Center (NFDC)

https://nfdc.faa.gov/xwiki/bin/view/NFDC/WebHome

FAA Data & Research

http://www.faa.gov/data_research/

Flight Delay Information

http://www.fly.faa.gov/flyfaa/usmap.jsp

demisx

belongs_to:

1. Assigning an object to a belongs_to association does not automatically save the object. It does not save the associated object either.

has_one:

1. When you assign an object to a has_one association, that object is automatically saved (in order to update its foreign key).
2. In addition, any object being replaced is also automatically saved, because its foreign key will change too
3. If either of these saves fails due to validation errors, then the assignment statement returns false and the assignment itself is cancelled.
4. If the parent object (the one declaring the has_one association) is unsaved (that is, new_record? returns true) then the child objects are not saved. They will automatically when the parent object is saved.

knomedia

require 'nokogiri'

namespace :ember_cli_rails do

  desc "compile ember and update application.html.erb with ENV vars"
  task :build => [:ember, :update_env] do

  end

  desc 'Build ember app and copies css and js files to rails'

krishagel

//Brocfile.js

/* global require, module */

var EmberApp = require('ember-cli/lib/broccoli/ember-app');
var pickFiles = require('broccoli-static-compiler');
var mergeTrees  = require('broccoli-merge-trees');

var app = new EmberApp({
  name: require('./package.json').name,

kachayev

Channels Are Not Enough

... or Why Pipelining Is Not That Easy

Golang Concurrency Patterns for brave and smart.

By @kachayev

Intro