LispForum

I mean a stream you can write to, and when you read from it, the same comes out. Basically as in the example make-two-way-stream , but with less angering me by showing it can be done but only giving an horribly crappy way. Basically i want a function that makes `(make-two-way-stream (make-string-inp...

Searched for the word in the forum, did not find it. So i thought i'd post about it. This was their 'introductionary blog post , you may have seen it from other places. Basically Julia is a lisp, if you look at metaprogramming for a description. Basically, code afaics consists of Expr objects. It ta...

Why not just decode-universal-time and encode-universal-time?

Afaik QUOTE does not make x constant, quote make the variable x point to a list '(1 2 3 4 5), but that list is *not* created when you call it, it is always there. So if you do: (defun quote-abuse () (let ((list '(1 2 3 4 5))) list)) (setf (car (quote-abuse)) 'unexpected) (quote-abuse) ;=> (unexpecte...

cl-cairo2 ( github ) would be good for it especially if we also could easily have keyboard/mouse/etc input in conjunction with it, and it has much more drawing ability. Neat to be able to export to many things, svg, ps, pdf, png, X11 window. Maybe i'll see if i can add a function to give sdl an cai...

By chance i came across FMOD and CL-FMOD the page is vandalized to be blank.. I can't seem to find a revert button.. Looking a bit further this page was also vandalized, and looking at some of the links below there, many of them are blanked too..Some are blanked because it was spam and people didn't...

You could make (defgeneric coin-value (coin) (:method ((coin (eql 'dollar)) 100) (:method ((coin (eql 'dime)) 10)) ;..Etcetera, just a way to list values of the different types. And then you feed the function a list, starting with the higher-value coins ending with the lower value coins, and then go...

Best way to figure it out is to try it in this case :) CL->USER> (read-line) yup it is a string "yup it is a string" nil You can coerce a string to a list with (coerce string 'list), but that'd be a list of characters, of course. I think you might want to use READ which reads one s-express...

Not sure where to find an 'accounting example' tutorial, if you mean that. There are a couple of good books, like Practical Common Lisp . this thread lists a bunch of other books, though not all as suitable. You could, for instance, make what you say with hashtables(make-hash-table,gethash) and stru...

Would be handy if it also asked which we've read this questionare is biased toward the books that are read more. I only read PCL and part of SICP, i refrained from voting..