Search found 271 matches

by Goheeca
Mon Mar 14, 2016 6:12 am
Forum: Common Lisp
Topic: New to LISP
Replies: 3
Views: 4817

Re: New to LISP

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 (+...
by Goheeca
Thu Mar 10, 2016 1:04 pm
Forum: Common Lisp
Topic: Reading a file, store it and display it
Replies: 5
Views: 6691

Re: Reading a file, store it and display it

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...
by Goheeca
Thu Mar 03, 2016 10:48 am
Forum: Homework
Topic: Help for the first program of a newbie
Replies: 1
Views: 3821

Re: Help for the first program of a newbie

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...
by Goheeca
Tue Feb 23, 2016 5:30 am
Forum: Common Lisp
Topic: intern and quoted symbols
Replies: 3
Views: 4804

Re: intern and quoted symbols

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

Code: Select all

#:uninterned-symbol
by Goheeca
Wed Feb 03, 2016 4:15 am
Forum: Common Lisp
Topic: Is #S(quux ...) a literal?
Replies: 5
Views: 6980

Re: Is #S(quux ...) a literal?

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...
by Goheeca
Sun Jan 31, 2016 4:36 am
Forum: Common Lisp
Topic: cl-json
Replies: 3
Views: 5527

Re: cl-json

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...
by Goheeca
Sat Jan 30, 2016 6:29 am
Forum: Common Lisp
Topic: cl-json
Replies: 3
Views: 5527

Re: cl-json

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> (json:set-decoder-...
by Goheeca
Thu Jan 21, 2016 5:51 am
Forum: Common Lisp
Topic: Common Lisp HyperSpec
Replies: 5
Views: 7617

Re: Common Lisp HyperSpec

Huh, good to know the terms and the story. ;)
by Goheeca
Thu Jan 14, 2016 2:12 pm
Forum: Common Lisp
Topic: Common Lisp HyperSpec
Replies: 5
Views: 7617

Re: Common Lisp HyperSpec

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...
by Goheeca
Wed Oct 21, 2015 12:28 pm
Forum: The Lounge
Topic: PROLOG FORUM?
Replies: 6
Views: 10908

Re: PROLOG FORUM?

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