Smalltalk environments have used this as a fancy docsearch for ages now, I believe - Pharo has one. It's actually pretty nice for beginners to help them learn a

Smalltalk environments have used this as a fancy docsearch for ages now, I believe - Pharo has one. It's actually pretty nice for beginners to help them learn a standard library. It's unfortunate that the search space is probably to big for some of the less trivial examples you'd want (e.g. the trickier Clojure collection functions).