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-- Default order will return NULL values at
-- the end of list
SELECT value FROM example ORDER BY value;
  ------------
  -- value  --
  ------------
  -- 1      --
  -- 2      --
  -- 3      --
  -- NULL   --

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# Compares if a version is greater than other.
Gem::Version.new('2.1.15') > Gem::Version.new('1.14.1')
# => true

# It supports any number of minor versions
Gem::Version.new('2.0.0.1') < Gem::Version.new('2.0.1')
# => true

# And it deals with empty strings and nil values
Gem::Version.new('') < Gem::Version.new('2.0.1')

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#!/usr/bin/env ruby
# usage: git-release branch-name-1 branch-name-2 origin/remote-branch-name-3
branchs = ARGV[0..-1]

abort unless system("git checkout master")
abort unless system("git pull")
abort unless system("git remote prune origin")

system("gitk")
print("Informe qual a tag que será usada nesse release: ")

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These are the steps I needed to take after installing Yosemite

1. Java JDK error

The first error I've catch was an error in Java JDK. A popup was shown with this message: "To view this web content, you need to install the Java Runtime Environment."

In order to fix this, you need to install the latest Java 8 JDK.

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require "bundler"
Bundler.setup(:default, :test)

require "active_record"
require "active_support"

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git config --global alias.s status
git config --global alias.a add
git config --global alias.d diff
git config --global alias.g grep
git config --global alias.b branch
git config --global alias.c commit
git config --global alias.co checkout
git config --global alias.mt mergetool
git config --global color.diff auto
git config --global color.status auto

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# Dependencies: libnotify-bin sox
# Sound file download: http://www.soundjay.com/clock/alarm-clock-1.wav
DISPLAY=:0 notify-send -t 1000 -i ~/Pictures/icons/pomodoro.png "New Pomodoro starts" "You have 45 minutes to work."
while true; do
  sleep 2700 # 45 minutes
  DISPLAY=:0 notify-send -t 1000 -i ~/Pictures/icons/pomodoro.png "Pomodoro ends" "Take a break for 15 minutes!"
  play ~/Music/effects/alarm-clock-1.wav
  sleep 900 # 15 minutes
  DISPLAY=:0 notify-send -t 1000 -i ~/Pictures/icons/pomodoro.png "New Pomodoro starts" "You have 45 minutes to work."
  play ~/Music/effects/alarm-clock-1.wav

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import java.util.Random;

public class Price {
  private int value;

  public Price(int value) {
    this.value = value;
  }

  public int getValue() {

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# Utils
sudo apt-get install htop
sudo apt-get install gnome-do
sudo apt-get install exuberant-ctags ncurses-term
sudo apt-get install vim-gnome
sudo apt-get install inkscape
sudo apt-get install sun-java6-jdk
sudo apt-get install compizconfig-settings-manager
sudo apt-get install ubuntu-restricted-extras

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module ScopeByAttribute
  def self.included(base)
    base.send(:extend, ScopeByAttribute::ClassMethods)
  end

  module ClassMethods
    def scope_by_attribute(attribute)
      @scoped_attributes ||= []
      @scoped_attributes << attribute.to_sym
    end