This is from 2008 and from a quick skim seems ok, but delves unnecessarily into some distinctions between vars and symbols and stuff that's totally not helpful for someone new to Lisp.

I also don't think "str" is a special form, is it? https://github.com/clojure/clojure/blob/f5f827ac9fbb87e770d2...

Nope, it's definitely a function. That caught my eye as well.

Great tutorial, but how is this on the front page? This article is 4 years old.

str is definitely not a special form, and wasn't, at least as far back as the 20081217 release. The article's date is from May 2008, though, so it's possible, if unlikely, because most special forms are special because they require non-standard evaluation order, and str doesn't qualify.

Does anyone have experience with Clojure using openjdk6 for ARM? I've got one of those embedded devices (armv5) and I'm curious what the performance is like with such a minimal amount of memory (~128-512MB).