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<%= f.select :invited_by_id, collection: User.approved.map {|u| [u.doc, u.id, {"names" => u.names}]} %>

<label id="name"> -- </label>

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.directive "onlyDigits", ->
  restrict: "A"
  require: "?ngModel"
  link: (scope, element, attrs, ngModel) ->
    return  unless ngModel
    reg = /^-?\d*\.?\d*$/
    ngModel.$parsers.unshift (inputValue) ->
      digits = inputValue.split("").filter((s) ->
        not !reg.test(s)
      ).join("")

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directive "ngBlur", ->
  (scope, elem, attrs) ->
    elem.bind "blur", ->
      scope.$apply attrs.ngBlur


directive "ngFocus", ($timeout) ->
  (scope, elem, attrs) ->
    scope.$watch attrs.ngFocus, (newval) ->
      if newval

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// separator inside forms

form hr{
 display:block;
 border:none;
 color:white;
 height:1px;
 background:black;
 background: -webkit-gradient(radial, 50% 50%, 0, 50% 50%, 350, from(#000), to(#fff));
}

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htmlEntities: (str) ->
      return String(str).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&apos;')

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#init.d service for nginx
 
wget -O init-deb.sh http://library.linode.com/assets/660-init-deb.sh
 
sudo mv init-deb.sh /etc/init.d/nginx
 
sudo chmod +x /etc/init.d/nginx
 
sudo /usr/sbin/update-rc.d -f nginx defaults
 

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full explanation: https://www.digitalocean.com/community/articles/how-to-add-swap-on-ubuntu-12-04

sudo dd if=/dev/zero of=/swapfile bs=1024 count=512k
sudo mkswap /swapfile
sudo swapon /swapfile
echo 0 | sudo tee /proc/sys/vm/swappiness
echo vm.swappiness = 0 | sudo tee -a /etc/sysctl.conf
sudo chown root:root /swapfile 
sudo chmod 0600 /swapfile

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Date (Year, Month, Day):
  %Y - Year with century (can be negative, 4 digits at least)
          -0001, 0000, 1995, 2009, 14292, etc.
  %C - year / 100 (round down.  20 in 2009)
  %y - year % 100 (00..99)

  %m - Month of the year, zero-padded (01..12)
          %_m  blank-padded ( 1..12)
          %-m  no-padded (1..12)
  %B - The full month name (``January'')

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Installation guide for Ruby stack in Ubuntu (Work In Progress)

Open your terminal and copy and paste the following commands:


# This will install: git, ruby and zsh:

sudo apt-get update
sudo apt-get install build-essential git zlib1g-dev openssl libopenssl-ruby1.9.1 libssl-dev libruby1.9.1 libreadline-dev libcurl4-gnutls-dev librtmp-dev curl -y
sudo apt-get install zsh -y

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    File.write("server.pid", Process.pid)

    trap("SIGINT") do
      File.delete("server.pid")
      exit
    end