Example is for map, not set!
22.214.171.124 23:41, 26 December 2013 (PST) Nishant
Example is now for set. I've tested gcc and clang, both compile and produce expected output. Incidentally I made a new template page for this to not damage other pages using the old template, but that template is poorly made and could be replaced by a more generic version of my template.