title: What does it mean in ruby when there are more than one values after = separed by , assigned to a single variable?
body: <p>Specifically how does this work</p>
  <pre><code>config.cache_store = :mem_cache_store, &quot;cache.example.com&quot;, { pool_size: 5, pool_timeout: 5 }
  </code></pre>
  <p>Sometimes just two values are assigned like</p>
  <pre><code>config.cache_store = :mem_cache_store, &quot;cache.example.com&quot;
  </code></pre>