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

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

matthewlehner

#!/bin/bash
#
# PostgreSQL Backup Script Ver 1.0
# http://autopgsqlbackup.frozenpc.net
# Copyright (c) 2005 Aaron Axelsen <[email protected]>
#
# This script is based of the AutoMySQLBackup Script Ver 2.2
# It can be found at http://sourceforge.net/projects/automysqlbackup/
#
# The PostgreSQL changes are based on a patch agaisnt AutoMySQLBackup 1.9

tokarev-yuriy

*.swp
*.swo
.idea
bitrix/components/bitrix/*
bitrix/php_interface/dbconn.php
bitrix/managed_cache/*
bitrix/stack_cache/*
bitrix/wizards/*
bitrix/themes/*
bitrix/gadgets/*

makotokw

<?php
/**
 * Open Graph protocol for WordPress
 * @version 0.9.2
 * @author makoto_kw
 * @link https://gist.github.com/3399585
 */
// key into custom fields for description. Default is for All in One SEO Pack
define('WP_OGP_POST_DESCRIPTION_KEY', '_aioseop_description');

yctay

<!-- Locale switchers, but presents all available locales as options, even the presently active one -->

<ul>
  <% Refinery::I18n.config.frontend_locales.each do |locale| %>
    <li>
      <%= link_to "/#{locale.to_s + request.path}", {:title => Refinery::I18n.locales[locale]} do%>
        <span><%= Refinery::I18n.locales[locale] %></span>
      <% end -%>
    </li>
  <% end %>

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

infertux

# spec/support/capybara/select2_helper.rb or features/support/select2_helper.rb

module Select2Helper
  # @example
  #   select2 "Item", from: "select_id"
  #   select2 /^Item/, from: "select_id"
  #
  # @note Works with Select2 version 3.4.1.
  def select2(text, options)
    find("#s2id_#{options[:from]}").click

jbonney

require 'mina/bundler'
require 'mina/rails'
require 'mina/git'
require 'mina/rvm'

# Usually mina focuses on deploying to one host and the deploy options are therefore simple.
# In our case, there is a number of possible servers to deploy to, it is therefore necessary to
# specify the host that we are targeting.
server = ENV['server']
# Since the same host can have multiple applications running in parallel, it is necessary to

andreierdoss

def select2 text, options
  page.find("#s2id_#{options[:from]} a").click
  find(:xpath, "//body").find("input.select2-input").set(text)
  page.execute_script(%|$("input.select2-input:visible").keyup();|)
  find(:xpath, '//body').find('ul.select2-results li', text: text).click
end