viniciusteles

Sete Atitudes para Hackear a Indústria de Software

By Klaus Wuestefeld

1) Torne-se excelente.

Seja realmente bom em alguma coisa. Não fique só choramingando ou
querendo progredir às custas dos outros. Não pense q pq vc sentou 4
anos numa faculdade ouvindo um professor falar sobre software q vc
sabe alguma coisa. Jogador de futebol não aprende a jogar bola tendo

octplane

require 'rubygems'
require 'mongo'

module MongoPubSub
  QUEUES_COLLECTION = 'queues'
  class EndSubscriptionException < Exception; end
  class Publisher
    def initialize(queue_name, mongo_connection)
      # Initialize queue collection as a capped collection
      if not mongo_connection[QUEUES_COLLECTION].collection_names.include?(queue_name)

douglasrodrigo

#base
First = lambda {|a, b| a}
Last = lambda {|a, b| b}

#conditional
True = First
False = Last
Not = lambda {|boolean| boolean[False, True]}
And = lambda {|boolean_a, boolean_b| boolean_a[boolean_b, False]}
Or = lambda {|boolean_a, boolean_b| boolean_a[True, boolean_b]}

jasonrudolph

Programming Achievements: How to Level Up as a Developer

This gist is part of a blog post. Check it out at:

http://jasonrudolph.com/blog/2011/08/09/programming-achievements-how-to-level-up-as-a-developer

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

mckeed

require 'strong_parameters'

class ActiveRecord::Base
  include ActiveModel::ForbiddenAttributesProtection
end

class ActionController::Base
  
  # Use this with CanCan's load_resource to permit a set of params before
  # it tries to build or update a resource with them.

timcheadle

Make /robots.txt aware of the Rails environment

You probably don't want Google crawling your development staging app. Here's how to fix that.

$ mv public/robots.txt config/robots.production.txt
$ cp config/robots.production.txt config/robots.development.txt

Now edit config/routes.rb to add a route for /robots.txt, and add the controller code.

masonforest

Installing a Gem on Heroku from a Private GitHub Repo

Sometimes you want to use a gem on Heroku that is in a private repository on GitHub.

Using git over http you can authenticate to GitHub using basic authentication. However, we don't want to embed usernames and passwords in Gemfiles. Instead, we can use authentication tokens.

1. Get an OAuth Token from GitHub

---

First you will need to get an OAuth Token from GitHub using your own username and "note"

pellegrino

Clínica geral:

Marcus Thuma. Kant Praxis
Centro para medicina interna
Cardiologia, Gastroenterologia, Clínica Geral
Kurfürstendamm 42
10719 Berlim
Tel: (030) 88 71 44 60
Fax: (030) 88 71 44 619
E-mail: [email protected]

p1nox

Abstract

You could have postgre installed on localhost with password (or without user or password seted after instalation) but if we are developing we really don't need password, so configuring postgre server without password for all your rails project is usefull.

Install Postgre packages

• postgresql
• postgresql-client
• libpq-dev