Why would Objective-C require a post-2010 Mac?
<p>I'm thinking of signing up for the Objective-C Crash Course on Udemy but the requirement is a Mac after 2010. </p>

<p>I have an early 2009 with 2 x 3.32 GHz Quad-Core Intel Xeon 64 GB 1066 MHz DDR3 ECC &amp; ssHD happily running El Capitan v10.11.6 &amp; running Xcode beta 8.5</p>

<p>Is there something that I'm missing? Is it a hardware thing?
(Please forgive me if this is a really dumb question but I'm a newb in diapers.)</p>