LispForum

I can see your point about (loop while (...)) does the job of while. I guess I just avoid keyworded LOOPs like the plague. I find the syntax so un-Lisp-like.

I can't believe I didn't even think of just using LET. But, well, that brain fart aside, there are reasons to avoid it. In particular, the LET has to be outside the function being declared, which makes it difficult to use in macros. What I have in mind, in the end, is the ability to do something lik...

Hi forum, What would be the reasonable way to create a function-local variable with indefinite extent; i.e. that keeps its value between invocations of the function? The "function-local" part isn't really critical, of course, as long as it doesn't dirty the namespace otherwise. My naive im...

I quite enjoy these ones. An augmentation of unwind-protect makes it easy to e.g. open sockets or X displays, initialize them, and clean up if unsuccessful: (defmacro abnormal-protect (protected &body cleanup) (with-gensyms (done) `(let ((,done nil)) (unwind-protect (prog1 ,protected (setf ,done...