title: Use IF function to check if parameter is set without having to also create a condition
body: <p>I want to do this: <a href="https://cloudonaut.io/optional-parameter-in-cloudformation/" rel="nofollow noreferrer">https://cloudonaut.io/optional-parameter-in-cloudformation/</a></p>
  <p>Basically just want to use IF to check if a parameter was set at deploy time</p>
  <p>But I <em>really</em> resent having to create this weird middle-man &quot;condition&quot; for this. It's very convoluted, not readable, and I'll need to do it for every param I add that I want this behaviour for, so it's not scalable either.</p>
  <p>Is there any way to just set the default value of a param to <code>False</code> and use IF to see if it was set without creating this weird &quot;condition&quot; thing?</p>