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# Simple class to decorate a method and send information MiniProfiler
# Usage: CustomMiniProfiler.measure MyClass, :mymethod, "This method takes..."
class CustomMiniProfiler

  def self.measure klass, method, message, class_method=false
    receptor_class = class_method ? klass.singleton_class : klass
    receptor_class.send :define_method, "#{method}_with_mini_profiler" do |*args, &block|
      Rack::MiniProfiler.step(message) do
        send "#{method}_without_mini_profiler", *args, &block
      end

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> git fetch
...
error: non-monotonic index .git/objects/pack/pack-be03d54c63e1a503114461d4c1945b34c7af01c8.idx
...
> rm .git/objects/pack/pack-be03d54c63e1a503114461d4c1945b34c7af01c8.idx
> git index-pack .git/objects/pack/pack-be03d54c63e1a503114461d4c1945b34c7af01c8.pack

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{
  "browser"  : true,
  "jquery"   : true,
  "devel"    : true,
  "curly"    : true,
  "latedef"  : true,
  "maxdepth" : 3,
  "newcap"   : true,
  "noarg"    : true,
  "noempty"  : true,

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@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document domain("slack.com") {
  .bot_message {
    font-size:12px;
    color: #CCC;
  }
  
  .bot_message .member_image { 
    height: 16px;

brenes

This is my best try at transcribing of the lightning talk I gave at RUG::B on April 2016. Due to poor time management (LOL) the delivery was rushed and some examples were skipped, I hope having them posted here makes them more useful.

xargs

xargs is a small but very useful program that is installed in most if not all of your computers¹. Many of you probably know it. Those who don't will learn something really useful, but those who do will learn a couple of cool tricks, too.

Why xargs

You might have heard about the Unix philosophy:

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Delete local merged branches: git branch --merged | xargs  -I BRANCH git branch -d BRANCH
Delete remote merged branches: git branch -r --merged | grep -v '^*' | grep -v master | sed 's/origin\///g' | xargs  -I BRANCH -P 10 git push origin :BRANCH

brenes

Esta lista es el primer paso en mi proceso de deshacerme de libros.

Quien me conoce sabe lo mucho que me importan mis libros y lo que me duele separarme de ellos.

Algunos me han gustado, otros los he abandonado (perdona, Paul Auster). Todos me han hecho como soy, y creo que es hora de que se vayan a otros hogares a formar a otras personas.

Si has llegado aquí y quieres alguno de los libros, soy @brenes en Twitter.

Libros disponibles

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#!/usr/bin/env ruby

# Put this file in the root of your Rails project,
# then run it to output the SQL needed to change all
# your tables and columns to the same character set 
# and collation.
#
# > ruby character_set_and_collation.rb

DATABASE      = ''

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# This code is an example to combine different variants from different reasons into the request.variant setting from Rails 4.1

before_action :set_versions

def set_versions
  # First, we load all the variants from whatever our variant logic is (mobile support, tests ab, beta versions...)
  variants = []
  variants << params[:b].to_sym if params[:b]
  variants << params[:a].to_sym if params[:a]

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require 'aws-sdk'
Sidekiq.configure_server do |config|
  
  #.....
  ec2 = Aws::EC2::Resource.new(region: 'eu-west-1')

  # we build the name if the instance, based on the hostname
  i = ec2.instance(Socket.gethostname.gsub(/^[^-]*-/, ''))
  # we get its tags and check if it's the desired one
  if i.tags.map(&:value).includes('priority-batch')