[adz5a]

Is there a resource which compares Lisps (expressiveness, limitations, available special forms, ...)? I often read about lisp 1 and 2.0, clojure being a lisp 1.5 (because of the callable keywords if iirc).

Dabbling into llms I think that lisps could be very interesting format to expose tools to llms, ie prompting a llm to craft programs in a Lisp and then processing (by that I mean parsing, correcting, analyzing and evaluating the programs) those programs within the system to achieve the user's goal.

[Jtsummers]

> lisp 1 and 2.0

Do you mean Lisp-1 and Lisp-2 as in the number of namespaces?

https://dreamsongs.com/Separation.html - Goes into depth on the topic including pros and cons of each in the context of Common Lisp standardization at the time (ultimately arguing in favor of Lisp-2 for Common Lisp on grounds of practicality, but not arguing strictly for either in the future).

Common Lisp was a, more or less, unification of the various Lisps, not Scheme, that had developed along some path starting from Lisp 1.5 (some more direct than others). They were all Lisp-2s because they all kept the same Lisp 1.5 separation between functions and values. Scheme is a Lisp-1, meaning it unifies the namespaces. The two main differences you'll find are that in CL (and related Lisps) you'll need to use `funcall` where in Scheme you can directly use a function in the head position of an s-expr:

  (let ((f ...))     ;; something evaluating to a function
    (f ...))         ;; Scheme
    (funcall f ...)) ;; Lisp