title: Check if any value in a Rust HashMap is greater than zero
body: <p>I want to check if a <code>HashMap&lt;i32, i32&gt;</code> contains any values greater than zero. I have this code:</p>
  
  <pre><code>let has_demand = minimums.iter().any(|*x| x &gt; 0)
  </code></pre>
  
  <p>which fails. The problem is with <code>|*x|</code>, but I don't know what to put there.</p>