This is the slideset for a short presentation I gave for people working on the Wikimedia puppet code about the new things in recent versions of the language.
<a href="//commons.wikimedia.org/wiki/User:GLavagetto_(WMF)" title="User:GLavagetto (WMF)">GLavagetto (WMF)</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>