bricker

"Russian-Doll Caching" is great. It embraces the Rails (and Ruby) goal to "make the developer happy". And it does. Not having to worry about cache expiration is superb.

It has its limits, though. If you're trying to avoid any database queries, russian-doll caching will not work for you. If you are trying to represent thousands, or even hundreds, of objects under a single cache fragment, russian-doll caching is not the best option.

We use it whenever it makes sense, but sometimes we just have to bite the bullet and expire a cache fragment manually. When you want to start manually expiring cache on a fairly busy website, you have to start considering race conditions. I recently ran into the following scenario:

class Post < ActiveRecord::Base
  after_save :expire_cache
  

elgalu

require 'clipboard' #gem install clipboard

def cbcopy(value)
  Clipboard.copy value unless value.empty?
  flash_message = value.empty? ? "Sorry, nothing to copy" : "Copied to clipboard"
  print "# #{flash_message}: "
  puts %Q("#{value}")
end

# Copy last result to the Clipboard

racheldonovan

module Wysihtml5Helper
  def fill_in_wysihtml5(text)
    #js must be enabled
    page.execute_script("editor.setValue('#{text}')")
  end
end

Mithrandir0x

// Source: https://groups.google.com/forum/#!topic/angular/hVrkvaHGOfc
// jsFiddle: http://jsfiddle.net/pkozlowski_opensource/PxdSP/14/
// author: Pawel Kozlowski

var myApp = angular.module('myApp', []);

//service style, probably the simplest one
myApp.service('helloWorldFromService', function() {
    this.sayHello = function() {
        return "Hello, World!"

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

krsmurata

pt-BR:
  views:
  admin:
    home:
      name: Home
    pagination:
      previous: "« Anterior"
      next: "Próximo »"
      truncate: "…"
    misc:

hugomaiavieira

#!/bin/sh
#
# Salve este script no diretório /etc/cron.hourly e dê permissão
# de execução a ele. Desse modo a cada hora sera verificada se a
# porcentagem de memória utilizada pelo sistema atingiu o valor definido
# na variável 'percent'. Caso positivo, o script informará ao kernel
# que este deverá alterar o valor da opção 'drop_caches' para 3.
#
# Mais detalhes: 'man proc' -> /proc/sys/vm/drop_caches.
PATH="/bin:/usr/bin:/usr/local/bin"

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')