Sign up to create your own snipts, or login.

Public snipts » ruby The latest public ruby snipts.

showing 1-20 of 76 snipts for ruby
  • ∞ AppConfig 
    # For a application config (config/application.yml)
# Request: AppConfig.variable_name
#
#-> config/initializers/AppConfig.rb
module ApplicationConfiguration
  require 'ostruct'
  require 'yaml'  
  if File.exists?( File.join(RAILS_ROOT, 'config', 'application.yml') )
    file = File.join(RAILS_ROOT, 'config', 'application.yml')
    users_app_config = YAML.load_file file
  end
  default_app_config = YAML.load_file(File.join(RAILS_ROOT, 'config', 'application.yml'))
  
  config_hash = (users_app_config||{}).reverse_merge!(default_app_config)

  unless defined?(AppConfig)
    ::AppConfig = OpenStruct.new config_hash
  else
    orig_hash   = AppConfig.marshal_dump
    merged_hash = config_hash.merge(orig_hash)
    
    AppConfig = OpenStruct.new merged_hash
  end
end

    copy | embed

    0 comments - tagged in  posted by cbeier on Mar 08, 2010 at 7:00 a.m. EST
  • ∞ Ruby controller to supply data to Flot JS 
     def graph
    #Get last 8 weights, but after we build the Array for the JS Graph we need to reverse
    #the array so that it ends up chronologically.
    #Also counting down from the size of the weight list, b/c the graphing tool doesn't seem to
    # be tricked so easily
    @user = params[:id].blank? ? @current_user : User.find(params[:id])

    @weight = Weight.find(:all, :conditions=>["user_id = ?", @user.id], :limit=>8 , :order=>'created_at DESC')
    @DataSet = Array.new
    @Ticks = Array.new
    counter = @weight.size
    for weight in @weight
      #counter = weight.created_at.strftime("%Y%m%d")
      counter = weight.created_at.to_i * 1000
     @DataSet.push([counter,weight.weight])
     @Ticks.push([counter,weight.created_at.strftime("%Y-%m-%d")])
    end
    @DataSet.reverse!
    @Ticks.reverse!

    #Determine BMI ranges
    @bmi_ranges = {}
    @bmi_ranges["underweight"] = "from: 0, to:#{sprintf("%.2f",(18.5 * (@user.height_in_inches **2).to_f)/703) }"
    @bmi_ranges["normal"] = "from: #{sprintf("%.2f",(18.6 * (@user.height_in_inches **2).to_f)/703)}, to:#{sprintf("%.2f",(24.9 * (@user.height_in_inches **2).to_f)/703) }"
    @bmi_ranges["overweight"] = "from: #{sprintf("%.2f",(25 * (@user.height_in_inches **2).to_f)/703)}, to:#{sprintf("%.2f",(29.9 * (@user.height_in_inches **2).to_f)/703) }"
      @bmi_ranges["obese"] = "from: #{sprintf("%.2f",(30 * (@user.height_in_inches **2).to_f)/703)}, to: 2000"


    respond_to do |format|
      format.js
    end
  end

    copy | embed

    0 comments - tagged in  posted by lear64 on Feb 23, 2010 at 11:07 a.m. EST
  • ∞ module_function 
    module Math
  def sin(x)
    # ...
  end
  module_function :sin
end

Math.sin(1)
include Math
sin(2)

    copy | embed

    0 comments - tagged in  posted by jhlinuz on Feb 10, 2010 at 3:00 p.m. EST
  • ∞ Use '[' and ']' for regexps 
    # This will find the first numbers in an ip

ip = "123.33.1.200"
ip[/(\d+).(\d+).(\d+).(d+)/]

puts "First: #{$1}"
puts "Second: #{$2}"
# . . .

    copy | embed

    0 comments - tagged in  posted by jhlinuz on Jan 24, 2010 at 7:46 a.m. EST
  • ∞ Convert erb to haml 
    #!/usr/bin/ruby -w
#
# Script: erb2haml
# Author: Chip Castle - http://chipcastle.com
# Date:   16jan2010
#
Dir.foreach(".") do |file|
  next if /^\./.match(file)
  if File.extname(file).eql?('.erb')
    base = File.basename(file, '.erb')
    puts "Converting #{file} to HAML #{base}.haml"
    system "html2haml #{file} > #{base}.haml"
  else
    puts "Skipping #{file}"
  end
end

    copy | embed

    0 comments - tagged in  posted by chipcastle on Jan 16, 2010 at 10:43 p.m. EST
  • ∞ anak-ayam-kotek-kotek.rb - A simple ruby code for singing simple substraction mathematical problem. 
    # Ask Them How Many Anak Ayam Will Get Counted Down!
anak_ayam = gets.chomp    
if anak_ayam.is_a?(Integer) == true
  puts ''
else
  puts ''
# Now Get Down With It!
while anak_ayam != 0
  puts 'Tek Kotek Kotek Kotek'
  puts 'Anak ayam turun '+anak_ayam.to_s+'.'
  puts 'Tek Kotek Kotek Kotek'                 
  anak_ayam = anak_ayam.to_i - 1  
  puts 'Mati satu tinggalah '+anak_ayam.to_s+''
  puts ''
# If We Have One Anak Ayam Running Left!
  if anak_ayam == 1            
    puts ''
    puts 'Tek Kotek Kotek Kotek' 
    puts 'Anak ayam turunlah '+anak_ayam.to_s+'.'
    anak_ayam = anak_ayam - 1      
    puts 'Tek Kotek Kotek Kotek'     
    puts 'Mati satu tinggalah '+anak_ayam.to_s+''          
  else                     
  end
end

puts ''                  
end

    copy | embed

    0 comments - tagged in  posted by gerryleonugroho on Jan 13, 2010 at 3:41 a.m. EST
  • ∞ twitter gem & ruby 
    #!/usr/local/bin/ruby

require 'rubygems'
require 'twitter'

httpauth = Twitter::HTTPAuth.new('UserName', 'Password')

client = Twitter::Base.new(httpauth)
puts client.friends_timeline[0].text

    copy | embed

    0 comments - tagged in  posted by betahost on Jan 07, 2010 at 2:19 a.m. EST
  • ∞ Prepends " - " to each line 
    ruby -n -e 'puts " - " + $_' bla.txt

    copy | embed

    0 comments - tagged in  posted by nes1983 on Dec 09, 2009 at 8:06 a.m. EST
  • ∞ All erb files in dir to haml 
    #! /bin/bash
# erb2haml
# by Michelangelo Altamore
 
# Convert all files having a html.erb extension in the current dir
# to haml format with html.haml extension. HAML gem must be installed.

for erb_file in `find . -name *.html.erb`; do
if [ -f $erb_file ] ; then
name=${erb_file%.html.erb};
    html2haml  > .html.haml;
  fi;
done

    copy | embed

    1 comment - tagged in  posted by kevinvaldek on Dec 04, 2009 at 8:02 a.m. EST
  • ∞ For my friend. 
    #!/usr/bin/env ruby

class LinkedList
  def initialize(array=[])
    @array = array
    @current_index = 0
    @max_size = array.size
  end
  
  def next
    @current_index += 1 if @current_index < @max_size
    @current_index = 0 if @current_index >= @max_size
    return current
  end
  
  def prev
    @current_index -= 1 if @current_index > 0
    @current_index = @array.size - 1 if @current_index == 0
    return current
  end
  
  def current
    return @array[@current_index]
  end
end

array = %w"Apple Microsoft Nokia Motorola Google"
link = LinkedList.new(array)
puts "Current: #{link.current}"
puts "Next: #{link.next}"
puts "Current: #{link.current}"
puts "Next: #{link.next}"
puts "Current: #{link.current}"
puts "Next: #{link.next}"
puts "Current: #{link.current}"
puts "Next: #{link.next}"
puts "Current: #{link.current}"
puts "Next: #{link.next}"
puts "Current: #{link.current}"
puts "Next: #{link.next}"
puts "Current: #{link.current}"
puts "Next: #{link.next}"
puts "Current: #{link.current}"
puts "Next: #{link.next}"
puts "Current: #{link.current}"
puts "Next: #{link.next}"
puts "Current: #{link.current}"
puts "Next: #{link.next}"
puts "Current: #{link.current}"
puts "Prev: #{link.prev}"
puts "Current: #{link.current}"
puts "Prev: #{link.prev}"
puts "Current: #{link.current}"
puts "Prev: #{link.prev}"
puts "Current: #{link.current}"
puts "Prev: #{link.prev}"
puts "Current: #{link.current}"
puts "Prev: #{link.prev}"
puts "Current: #{link.current}"
puts "Prev: #{link.prev}"
puts "Current: #{link.current}"
puts "Prev: #{link.prev}"
puts "Current: #{link.current}"
puts "Prev: #{link.prev}"
puts "Current: #{link.current}"
puts "Prev: #{link.prev}"
puts "Current: #{link.current}"

    copy | embed

    0 comments - tagged in  posted by hechian on Nov 30, 2009 at 9:23 a.m. EST
  • ∞ Generic GAE Rakefile 
    require 'rubygems'
require 'appengine-sdk'

BASE = File.expand_path(File.dirname(__FILE__))
SRC = BASE + '/src'
LIB = BASE + '/WEB-INF/lib'
SERVLET = AppEngine::SDK::SDK_ROOT + '/lib/shared/geronimo-servlet_2.5_spec-1.2.jar'
APIS = AppEngine::SDK::API_JAR
WEB_INF_CLASSES = BASE + '/WEB-INF/classes'

def jvmc(compiler, *files)
  chdir(SRC) do
    files = files.map { |file| file.pathmap("%{^#{SRC}/,}p") }.join ' '
    dest = "-d #{WEB_INF_CLASSES}"
    mkdir_p WEB_INF_CLASSES
    libs = Dir[LIB + '/*.jar'].select { |path| File.file?(path) }
    orig_classpath = ENV['CLASSPATH']
    ENV['CLASSPATH'] ||= ''
    ENV['CLASSPATH'] += ['', SERVLET, APIS, WEB_INF_CLASSES].concat(libs).join(File::PATH_SEPARATOR)
    puts "sh %{#{compiler} #{dest} #{files}}"
    sh %{#{compiler} #{dest} #{files}}
    ENV['CLASSPATH'] = orig_classpath
  end
end

def class_file(src_file)
  src_file.pathmap("%{^#{SRC},#{WEB_INF_CLASSES}}X.class")
end

task :java_sources do
  java_sources = FileList[SRC + '/**/*.java']
  unless java_sources.inject(true) { |mem, file|
      mem && uptodate?(class_file(file), [file]) }
    jvmc('javac', java_sources)
  end
end

task :duby_sources do
  duby_sources = FileList[SRC + '/**/*.duby']
  unless duby_sources.inject(true) { |mem, file|
      mem && uptodate?(class_file(file), [file]) }
    jvmc('dubyc', duby_sources)
  end
end

task :compile => [:java_sources, :duby_sources]

task :clean do
  rm_rf WEB_INF_CLASSES
end

task :server => :compile do
  sh "dev_appserver.rb #{BASE}"
end

task :upload => [:clean, :compile] do
  sh "appcfg.rb update #{BASE}"
end

task :default => :server

    copy | embed

    0 comments - tagged in  posted by hvis on Nov 22, 2009 at 6:09 p.m. EST
  • ∞ Buffered IO from read-only stream 
    # Stole it from http://bit.ly/7COJAf, fixed a bug on line 26 (- -> +)

require 'stringio'

class BufferedIO
  def initialize(io)
    @buff = StringIO.new
    @source = io
  end

  def read(x=nil)
    to_read = x ? to_read = x + @buff.pos - @buff.size : nil
    _append(@source.read(to_read)) if !to_read or to_read > 0
    @buff.read(x)
  end

  def pos=(x)
    read(x - @buff.pos) if x > @buff.size
    @buff.seek x
  end

  def seek(x, whence=IO::SEEK_SET)
    case whence
      when IO::SEEK_SET then self.pos=(x)
      when IO::SEEK_CUR then self.pos=(@buff.pos + x)
      when IO::SEEK_END then read; self.pos=(@buff.size + x)
      # Note: SEEK END reads all the socket data.
    end
    pos
  end

  # Some methods can simply be delegated to the buffer.
  ["pos", "rewind", "tell", "eof?", "readline"].each do |m|
    module_eval "def #{m}\n@buff.#{m}\nend"
  end

  private

  def _append(s)
    @buff << s
    @buff.seek -s.size, IO::SEEK_CUR
  end
end

    copy | embed

    0 comments - tagged in  posted by hvis on Nov 21, 2009 at 5:39 p.m. EST
  • ∞ general cucumber paths (restful) 
    # Request in the feature -> ... the user show "foo" page by "login"

# -> features/support/paths.rb
when /^the (.*) (edit|show|overview|new)( "([^\"]*)")? page by "([^\"]*)"$/i
  case $2
  when "edit","show"
    klass = $1.singularize.capitalize.constantize
    obj = klass.send("find_by_#{$5.singularize}", $4) if $4 && $5
    raise "could not find #{$3} #{$1}" unless obj
    return self.send("edit_#{$1.downcase.singularize}_path",obj) if $2 == "edit"
    return self.send("#{$1.singularize}_path",obj) if $2 == "show"
  when "new"
    self.send("new_#{$1.downcase.singularize}_path")
  when "overview"
    self.send("#{$1.downcase.pluralize}_path")
  end

    copy | embed

    0 comments - tagged in  posted by cbeier on Nov 18, 2009 at 3:22 a.m. EST
  • ∞ Simple ruby script to display info for a screenshot 
    #!/usr/bin/env ruby

## Defining variables
@color0 = "\e[0;36m"
@color1 = "\e[0;32m"
@ss = "scrot" ##program to capture screenshot (set to nil for no screenshot)
@ssl = "~" ##location to save screenshot
@kernel = `uname -r`
@icon = `cat ~/.gtkrc-2.0 | grep gtk-icon-theme-name`.to_s.split("\"")[1]
@theme = `cat ~/.gtkrc-2.0 | grep gtk-theme-name`.to_s.split("\"")[1]
@font = `cat ~/.gtkrc-2.0 | grep gtk-font-name`.to_s.split("\"")[1]
@tfont = `cat ~/.Xdefaults | grep font`.split("\n")[-1].split(":")[2]




logo = "
#{@color0}                       __       #{@color1}___                                 
#{@color0}                      /\\ \\    #{@color1} /\\_ \\    __                          
#{@color0}     __     _ __   ___\\ \\ \\___ #{@color1}\\//\\ \\  /\\_\\    ___   __  __  __  _  
#{@color0}   /'__`\\  /\\`'__\\/'___\\ \\  _ `\\ #{@color1}\\ \\ \\ \\/\\ \\ /' _ `\\/\\ \\/\\ \\/\\ \\/'\\ 
#{@color0}  /\\ \\L\\.\\_\\ \\ \\//\\ \\__/\\ \\ \\ \\ \\ #{@color1}\\_\\ \\_\\ \\ \\/\\ \\/\\ \\ \\ \\_\\ \\/>  </ 
#{@color0}  \\ \\__/.\\_\\\\ \\_\\\\ \\____\\\\ \\_\\ \\_\\#{@color1}/\\____\\\\ \\_\\ \\_\\ \\_\\ \\____//\\_/\\_\\
#{@color0}   \\/__/\\/_/ \\/_/ \\/____/ \\/_/\\/_/#{@color1}\\/____/ \\/_/\\/_/\\/_/\\/___/ \\//\\/_/
\e[0m"
puts logo
puts

puts "#{@color0}Kernel:\e[0m #{@kernel}"
puts "#{@color0}Theme:\e[0m #{@theme}"
puts "#{@color0}Icons:\e[0m #{@icon}"
puts "#{@color0}Gtk Font:\e[0m #{@font}"
puts "#{@color0}Terminal Font:\e[0m #{@tfont}"
puts "#{@color0}Window Manager:\e[0m Xmonad"
puts "\e[0m\n"

`sleep 2;#{@ss} #{@ssl}/'%y-%m-%d_screenshot.png' -q 60`

    copy | embed

    0 comments - tagged in  posted by dangeroushobo on Nov 09, 2009 at 11:38 a.m. EST
  • ∞ Rails 3 app from edge 
    # From pastie http://pastie.org/684600 by José Valim

# First, clone Rails master
git clone git://github.com/rails/rails
cd rails

# Bundle Rails master dependencies
gem install bundler
gem bundle

# Generate a fresh developer app in a folder named rails inside your rails checkout:
cd railties
rake dev

# Configure the new fresh repo to use rails edge by changing config/boot.rb to:
environment = File.expand_path('../../../vendor/gems/environment', __FILE__)
require environment
require 'rails'

    copy | embed

    0 comments - tagged in  posted by kevinvaldek on Nov 05, 2009 at 10:35 a.m. EST
  • ∞ TextUnbreak 
    require 'rubygems'
require 'profligacy/lel'
require 'profligacy/swing'

module TextUnbreak
  BREAK_DEFAULTS = ".?!"
  IGNORE_DEFAULTS = "'\"»)>}” "

  class UI
    include_package 'javax.swing'
    include_package 'java.awt'
    include Profligacy

    def initialize
      UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName)
      @font = Font.new("Dialog", Font::PLAIN, 12)

      layout = "
        [<input_label]
        [(500,150)input]
        [symbols]
        [detect_headings]
        [<output_label]
        [(500,150)output]
        [>buttons]"
      symbols_layout = "
        [<break_symbols_label|<ignore_symbols_label]
        [(250)break_symbols|(250)ignore_symbols]"
      buttons_layout = "[run|save]"

      @ui = Swing::LEL.new JFrame, layout do |c, i|
        c.input_label = JLabel.new "Input text:"
        @input = JTextArea.new
        @input.font = @font
        c.input = JScrollPane.new @input
        c.output_label = JLabel.new "Output text:"
        @output =  JTextArea.new
        @output.font = @font
        c.output = JScrollPane.new @output

        c.symbols = Swing::LEL.new(JPanel, symbols_layout) do |sc, si|
          sc.break_symbols_label = JLabel.new "Linebreak allowed on:"
          sc.ignore_symbols_label = JLabel.new "Ignore symbols:"
          @breaks = JTextField.new BREAK_DEFAULTS
          @ignores = JTextField.new IGNORE_DEFAULTS
          sc.break_symbols = @breaks
          sc.ignore_symbols = @ignores
        end.build :auto_create_container_gaps => false

        c.detect_headings = Swing::Build.new(JPanel,
            :preserve_headings, :length_field, :length_label) do |pc, pi|
          @preserve_headings = JCheckBox.new "Preserve headings: lines shorter than", true
          pc.preserve_headings = @preserve_headings
          @heading_length = JSpinner.new SpinnerNumberModel.new 64, 0, 256, 1
          pc.length_field = @heading_length
          pc.length_label = JLabel.new "characters"
        end.build do |container|
          container.layout = FlowLayout.new FlowLayout::LEFT
        end

        c.buttons = Swing::LEL.new(JPanel, buttons_layout) do |bc, bi|
          bc.run = JButton.new "Run"
          bc.save = JButton.new "Save"
          bi.run = { :action => method(:mend) }
          bi.save = { :action => method(:save) }
        end.build :auto_create_container_gaps => false
      end

      @ui.build(:args => "TextUnbreak").default_close_operation = JFrame::EXIT_ON_CLOSE
    end

    def mend (type, event)
      src = @input.text
      dest = ""
      src.split("\n").each { |line|
        if (!preserve?(line) && broken?(line))
          dest << line.strip << " "
        else
          dest << line.strip << "\n"
        end
      }
      @output.text = dest
      puts "sudo unbreak!"
    end

    def save (type, event)
      puts "hallelujah! another soul saved!"
    end

    def broken? (line)
      breaks = @breaks.text
      ignores = @ignores.text
      (line.length - 1).downto(0) do |i|
        char = line[i]
        if ignores.index(char) == nil
          return breaks.index(char) == nil
        end
      end
      false
    end

    def preserve? (line)
      @preserve_headings.selected && line.length <= @heading_length.value
    end
  end
end

SwingUtilities.invoke_later proc { TextUnbreak::UI.new }.to_runnable

    copy | embed

    0 comments - tagged in  posted by hvis on Oct 27, 2009 at 10:22 a.m. EDT
  • ∞ a simple example showing mixin in Ruby 
    # animal.rb
module Animal
  def walk
    puts 'walk'
  end
end

# dog.rb
class Dog
  include Animal
end

# main.rb
require 'animal'
require 'dog'

dog = Dog.new
dog.walk

    copy | embed

    0 comments - tagged in  posted by jpartogi on Oct 20, 2009 at 9:35 a.m. EDT
  • ∞ To show the difference between instance variables and class variables in ruby 
    class Point
  @@n = 0

  def initialize(x=0, y=0)
    @x, @y = x, y
    @@n += 1
  end

  def x
    @x
  end

  def x=(x)
    @x = x
  end

  def n
    @@n
  end
  
end

point1 = Point.new
point1.x= 5
puts point1.x

point2 = Point.new
point2.x = 6
puts point2.x

puts point1.n

    copy | embed

    0 comments - tagged in  posted by jpartogi on Oct 20, 2009 at 9:10 a.m. EDT
  • ∞ Signal handling 
    Signal.trap("TERM") {puts "terminating..."; exit}

    copy | embed

    0 comments - tagged in  posted by mateuszzawisza on Oct 05, 2009 at 6:11 p.m. EDT
  • ∞ retry in rescue 
    #example usage of retry in begin rescue clause
#this retries 3 times then throws exception

retries = 0
begin
  smth_that_throws_exception
rescue => e
  raise e if retries > 3
  retries += 1
  retry
end

    copy | embed

    0 comments - tagged in  posted by mateuszzawisza on Sep 26, 2009 at 9:18 a.m. EDT
Sign up to create your own snipts, or login.