Typically in clojure we use hash-maps (represented literally as {}) where
other lisps would use an alist.
Regarding reading assoc list literals, I wouldn't be surprised if someone
had written this function already, but I doubt it is in the core language.
I also don't think it would be hard to implement. It would probably be best
to write a function that reads in nested xlisp alists and returns nested
maps.
To add a key to a map in clojure (acons in xlisp) we use assoc. It is
likely that xlisp allows multiple bindings to the same key in an alist -
maps do not work that way and you would need something slightly more
complex than just a map if you need that behavior.
To find a key in a map in clojure (assoc in xplisp) we use get. get is the
function used if a map or keyword is used in the calling position.
On Sunday, November 17, 2013 11:09:56 PM UTC-8, hpw...@googlemail.com wrote:
>
> Hello,
>
> As a newbie coming from a autolisp/newLISP background I have a question
> about using xlisp assoc-lists in clojure.
>
> I have huge databases form autolisp (from an autocad enviroment) in the
> form of nested assoc-lists.
>
> Can I stay with that format and read them from clojure?
>
> The first would be to emulate 'setq'
> This could be done with 'def' (with a single pair of symbol/expression)
> (By the way: Can a multiform of def be done like (defm symbol1 expression1
> ....symboln expressionn) by a macro)
>
> The scond is the use of assoc-lists in clojure:
>
> Is it wise to use them in clojure for huge data-lists?
> How can I access them like I do in autolisp with it's 'assoc'.
> Finding the sublist by its first member.
> I do not see a equivalent command for lists in clojure.
> clojures assoc command is completly different.
> Can it be done with a macro?
>
>
> Regards
>
> Hans-Peter
>
>
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