title: Go: naming convention for slice variables/params?
body: <p>Is the convention for naming slices in Go? Specifically, do you use plurals?
  I've noticed that Go App Engine doesn't (eg. it uses <code>key</code> not <code>keys</code>):</p>
  
  <pre><code>func GetMulti(c appengine.Context, key []*Key, dst interface{}) error
  </code></pre>
  
  <p>I haven't seen anything equivalent in the standard packages or docs I've read. Is singular or plural normal?</p>