Block/return-from is a lexical transfer of control that can be non-local (you can transfer out of a lambda or defun to an enclosing scope). For the dynamic equivalent there's catch/throw. Both transfers activate unwind-protect if they unwind the stack through it.
Gah, another Lisp post to tempt me to add yet another mini project to my plate...I always am curious about trying more Lisp because I keep seeing commentary about how powerful it is to actually build applications once you get moving on building things.<p>Anyone here have any recent practical experience in this direction who would confirm this in Lisp vs in other programming languages? Does effort in Lisp really compound/produce great code and great applications that much faster than other languages? (For web development primarily)
Is Common Lisp the first kitchen sink language (ala C++)? It always seems to me like there's a lot of "Oh yeah, Common Lisp has a feature for this, too"-type blog posts, though very little about actual usage of it.