title: What does interpolation mean in Ruby?
body: <p>This is a simple Ruby code, but I am not getting how to understand and use it.</p>
  
  <pre><code>def string_length_interpolater(incoming_string)
    "The string you just gave me has a length of #{incoming_string.length}"
  end
  </code></pre>
  
  <p>Could somebody help me the process?</p>