Hidden Features Of [insert language here]: This is a collection of one of the neatest community-driven features of StackOverflow. This guy explains it well.
[…] one day someone at StackOverflow started a “Hidden features of” post about a famous language (I don’t feel like finding out which one was first exactly), and it turned out to be so popular that other posts in the same series started popping up.
Such questions were quickly turned into community wikis, for the purposes of harvesting and organizing information coming from the best developers on the planet and voted by users of the site. There are literally hundreds of answers, sorted by votes.
Your language is probably in there.