title: Regex to match even, non-zero numbers
body: <p>I have the following regex: <code>[\-+]?[0-9]*[02468]$</code>
  which matches positive or negative even numbers, but I also want it to not match '0'. How can I accomplish this? I can't find a way to translate "Only match 0 as the final number if there are numbers that precede it" into regex language.</p>
  
  <p>Thanks.</p>