melopilosyan

Boolean Transformations

x || !x == true                         # Tautology
x && !x == false                        # Contradiction
true && x == x                          # Identity law
false || x == x                         # Identity law
true || x == true                       # Nullification law
false && x == false                     # Nullification law
x && x == x                             # Idempotent law
x || x == x                             # Idempotent law

just3ws

#!/usr/bin/env jruby

require_relative '../lib/schrute'

require 'csv'
require 'thread_safe'

java_import java.util.concurrent.Callable
java_import java.util.concurrent.Executors
java_import java.util.concurrent.FutureTask

mislav

PS1='\[\033[31m\]\w\[\033[0m\] $ '

export EDITOR=vim

alias st='git status -sb'

just3ws

#!/bin/bash -x

echo "LANG=\"en_US.UTF-8\"" >> /etc/environment
echo "LANGUAGE=\"en_US.UTF-8\"" >> /etc/environment
echo "LC_ALL=\"en_US.UTF-8\"" >> /etc/environment

source /etc/environment

apt-get install -y --reinstall locales
locale-gen en_US.UTF-8

just3ws

#!/usr/bin/env bash -x

apt-get -y update

# -------------------------------
# Based on bootstrap-ubuntu-12-04
# https://raw.github.com/fesplugas/rbenv-bootstrap/master/bin/rbenv-bootstrap-ubuntu-12-04

# Update sources:
apt-get -y update

just3ws

Aaron Bedra
Aaron Holbrook
Aaron Kalin
Adam Grandy
Adewale Oshinye
Amy Kinney
Andrea Magnorsky
Andy Lester
Angelique Martin
Anthony Zinni & Jon Buda & Shay Howe

just3ws

def self.models
  ActiveRecord::Base
    .send(:subclasses)
    .map { |model| model.name.constantize }
end

def self.controllers
  Rails.application.routes.routes
    .select  { |r| r.defaults[:controller].present? }
    .uniq    { |r| r.defaults[:controller] }

just3ws

# The example I tweeted about preferring the more verbose if..then..else..end 
# over ternary operations in Ruby got mangled by Twitter.

# So when my tweet showed everything on one line my message got muddled. 
# The reformatting of my tweet also looked like I was trying to evaluate 
# an expression that returned literally "true" or "false" which wasn't the case.

# What I wanted to show was that many people write IF/ELSE statements as 
# ternary operations.

txus

vimcov

Vimcov runs a Ruby script and opens Vim marking the lines that were actually run.

This could be useful when debugging long methods with lots of branching -- instead of abusing puts, you can just use Vimcov and you're good to go.

It runs only in Ruby 1.9.x.

Future versions will include more tight integration with test runs or Rails or whatever.

flavio

#!/usr/bin/env ruby

require 'rubygems'
require 'bundler'
require 'fileutils'
require 'net/http'
require 'net/https'
require 'uri'

TMP_DIR = "/tmp/gems"