mmap() files in Common Lisp

[wglb]

http://wandrian.net/2012-04-07-1352-mmap-files-in-lisp.html

[mahmud]

Terrible use-case though. ID3 metadata is a few hundred bytes, all of it in the header. Just use READ-SEQUENCE and be done with it.

  (defun read-n-bytes (path &optional (n 512))
    (with-open-file (fd path :element-type '(unsigned-byte 8)) 
      (let ((header (make-array n)))
        (read-sequence header fd)
         header)))

[galdor → mahmud]

You're right, the example isn't a good use case for mmap, but it's just here to show how to use osicat for mmapping :)