LispForum

Or you can take more functional approach and return a lambda function so instead of: (defun find-closest-in-grid (radar type pos-x pos-y) (labels ((distance (x y) (+ (abs (- x pos-x)) (abs (- y pos-y))))) (destructuring-bind (width height) (array-dimensions radar) (let ((best nil) ((best-distance (+...

The definition of a function in Common Lisp consists of defun the name of function a list of arguments and an implicit progn The value of a progn expression is the last expression in that progn . That means if you want return the 'dico' in your function, just write it down as a last expression in th...

Here is a good article for the indentation of Common Lisp, that should be fine for scheme/racket too. Changing variables is done through set! (the exclamation mark denotes that the function has side effects): (define x 0) (set! x 1) What concerns the pairs and / and? and not / not? , without questi...

That's pretty much that. However there is another possibility how to make uninterned symbol:

Can you describe what SBCL is doing? I have right now installed pretty old version 1.1.12. Nevertheless, sharpsign syntax denotes a reader macro and that means it is by a standard way evaluated before the quasiquotation takes a place or in other words the quasiquotation doesn't stop evaluating reade...

If you want iterate over the keys in CLOS objects you'd need MOP . However I'd go for hashtables and setup cl-json this way: (json:set-decoder-simple-clos-semantics) (setf json:prototype nil) (multiple-value-setq (json:*beginning-of-object-handler* json:*object-key-handler* json:*object-value-handle...

After a little bit of experimentation, I come with this: ; SLIME 2014-12-23 CL-USER> (ql:quickload :cl-json) To load "cl-json": Load 1 ASDF system: cl-json ; Loading "cl-json" [package json].................................... [package json-rpc]................ (:CL-JSON) CL-USER...

Huh, good to know the terms and the story.

I finally found out about the mutual rights' relationship (actually it's also noted in CLHS), CLHS existence is permitted by ANSI and X3. The stance on the distribution of CLHS is also described there , I'm by no means an expert on copyright laws, but I'd say that you can use it in a complete and un...

Here we are in The Lounge, it seams ok. I personally don't mind prolog oriented discussions here.