Building Large Systems in Lisp (2010)

&gt;In Java I need &quot;factory objects&quot;, &quot;visitors&quot;, and other such pieces of &quot;design patterns&quot;. In lisp, I have never needed to write a &quot;factory&quot;. The whole &quot;visitor&quot; pattern becomes a 1-line (map...) call.<p>You don&#x27;t need any of those things, although they (regrettably) certainly are in the culture.

&gt; So, yes, lisp does not HAVE a lot of libraries. But what people miss is that lisp doesn&#x27;t NEED libraries.<p>This sounds a bit overly optimistic to me...

I searched for this so many times. I thought it was a blog post, not a ML one.

I presume that &quot;graph&quot; here means &quot;data structure&quot; rather than &quot;graphics&quot;. I could see creating the data structure in Lisp code just in passing, with no library needed. Easy. Computer graphics? Not so much.