Birbla

Join the discussion

Write your take first — we'll ask for email only when you're ready to publish.

Sign in
  • Hacker News
  • Clojure 1.6, Emacs 24.5... These are pretty old versions, at least of those.
    by eamonnsullivan
  • > cannot start with digit

    Not only it can, but both CL and Emacs Lisp actually defines primitives with names that start with digit.

    by dfox
  • Emacs has cl-lib

    https://www.gnu.org/software/emacs/manual/html_mono/cl.html

    by anthk
  • Perhaps related, I'm maintaining a "cheatsheet" to let Python programmers see what an Elisp equivalent to typical Python functions/methods are.

    https://kickingvegas.github.io/elisp-for-python/

    by kickingvegas
  • As someone who's not a programmer but has beginner - medium python & C skills. I'm in middle of learning lisp (elisp to be precise) and it feels like reading poetry. It's a transcendent experience that's hard to explain. Such beautiful concepts. Everything flows in a way it doesn't in C based langs
    by FergusArgyll
  • The page indicates that there is not function for documentation in common lisp, but

      (documentation 'documentation 'function)
      "Return the documentation string of Doc-Type for X, or NIL if none 
        exists. 
        System doc-types are VARIABLE, FUNCTION, STRUCTURE, TYPE, SETF, and T.

 Also http://rosettacode.org for computer tasks implemented in many computer languages to allow you compare syntax and code.
    by sinsudo
  • I know that the purpose of the page is to compare syntax of common lisp, racket, clojure, and emacs lisp. But some examples could be more idiomatic, for instance instead of

      (defun add (a &rest b)
    (if (null b)
        a
        (+ a (eval (cons '+ b)))))
    One should avoid eval and use endp instead of null:

       (defun add (a &rest b)
        (if (endp b) a
            (apply #'add (+ a (first b)) (rest b))))
    by sinsudo
  • Notes on CL:

    - why nothing on the "compiler" line? Everytime you load a snippet or a file with SBCL, it compiles it (to machine code). There's also compile-file.

    - interpreter: likewise, all code is compiled by default with SBCL, not interpreted, even in the REPL. To use the interpreter, we must do this: https://github.com/lisp-tips/lisp-tips/issues/52

    - command line program: the racket cell shows the use of -e (eval), the same can be done with any CL implementation.

    - since the string split line introduces cl-ppcre, one could mention cl-str :D (plug) (much terser join, trim, concat etc)

    - ah ok, for dates and times, flattening a list, hash-table literals… we need more libraries.

    - more files operations: https://lispcookbook.github.io/cl-cookbook/files.html

    - emacs buffers: now compare with Lem buffers 8-)

    - posix-getenv: I'd rather use uiop:getenv (comes in implementations).

    - uiop:*command-line-arguments*

    - exit: uiop:quit

    - uiop:run-program (sync) / launch-program (async)

    - java interop: with LispWorks or ABCL (or other libraries)

    my 2c

    by vindarel

Explore Birbla archives