edymerchk

(ifconfig wlan 2>/dev/null || ifconfig en0) | grep inet | grep -v inet6 | awk '{print $2}' | sed 's/addr://g'

edymerchk

# based on Haversine formula 
# http://en.wikipedia.org/wiki/Haversine_formula

distance = (lat1, lon1, lat2, lon2) ->
    R = 6371
    a = 0.5 - Math.cos((lat2 - lat1) * Math.PI / 180) / 2 + Math.cos(lat1 * Math.PI / 180) * Math.cos(lat2 * Math.PI / 180) * (1 - Math.cos((lon2 - lon1) * Math.PI / 180)) / 2
    R * 2 * Math.asin(Math.sqrt(a))

edymerchk

$.datepicker.regional['es'] = {
 closeText: 'Cerrar',
 prevText: '<Ant',
 nextText: 'Sig>',
 currentText: 'Hoy',
 monthNames: ['Enero', 'Febrero', 'Marzo', 'Abril', 'Mayo', 'Junio', 'Julio', 'Agosto', 'Septiembre', 'Octubre', 'Noviembre', 'Diciembre'],
 monthNamesShort: ['Ene','Feb','Mar','Abr', 'May','Jun','Jul','Ago','Sep', 'Oct','Nov','Dic'],
 dayNames: ['Domingo', 'Lunes', 'Martes', 'Miércoles', 'Jueves', 'Viernes', 'Sábado'],
 dayNamesShort: ['Dom','Lun','Mar','Mié','Juv','Vie','Sáb'],
 dayNamesMin: ['Do','Lu','Ma','Mi','Ju','Vi','Sá'],

edymerchk

# Say you have a string field in the DB that needs to be order like numbers
#If you do the following... maybe its not what you want:

Document.order(:number).pluck(:number)
=> [ "1", "10591059616", "100", "2", "22"....]

# But if you do...:

Document.order("LENGTH(documents.number), number").pluck(:number)
=> ["1", "2", "22", "99", "100", "10591059616"...]

edymerchk

module W
  def foo
    "- Mixed in method defined by W\n" + super
  end
end

module X
  def foo
    "- Mixed in method defined by X\n" + super
  end

edymerchk

fibbonacci = Hash.new do |accumulator, index|
  accumulator[index] = fibbonacci[index - 2] + fibbonacci[index - 1]
end.update(0 => 0, 1 => 1)

irb(main)> fibbonacci[100]
=> 354224848179261915075

edymerchk

  require 'rbconfig'

  def os
    @os ||= (
      host_os = RbConfig::CONFIG['host_os']
      case host_os
      when /mswin|msys|mingw|cygwin|bccwin|wince|emc/
        :windows
      when /darwin|mac os/
        :macosx

edymerchk

class Person
  def self.new(name)
    @cache ||= {}
    @cache[name] ||= super(name)
  end
  def initialize(name)
    @name = name
  end
end

edymerchk

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')

edymerchk

function shuffle(o){
    for(var j, x, i = o.length; i; j = Math.floor(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x);
    return o;
  };