title: What is "_," (underscore comma) in a Go declaration?
body: <p>And I can't seem to understand this kind of variable declaration:</p>
  
  <pre><code>_, prs := m["example"]
  </code></pre>
  
  <p>What exactly is "<code>_,</code>" doing and why have they declared a variable like this instead of</p>
  
  <pre><code>prs := m["example"]
  </code></pre>
  
  <p>(I found it as part of <a href="https://gobyexample.com/maps" rel="noreferrer">Go by Example: Maps</a>)</p>