But we should mention that recursive data structures that contain refs are
a bit of a code-smell. Your structures are no longer immutable if they
contain refs which are mutable containers for immutable data. Something to
think about.

On Thu, Mar 31, 2016 at 9:53 AM, James Reeves <ja...@booleanknot.com> wrote:

> On 31 March 2016 at 16:39, hiskennyness <kentil...@gmail.com> wrote:
>
>> In porting my modelling library Cells to Clojure I managed to get a stack
>> overflow when the printer tried to print a recursive data structure* I have
>> used in the Common Lisp version.
>>
>> * Basically, a ref holds a map in which some values are maps in which
>> some values are the ref.
>>
>> In Lisp we have *print-depth* as well as *print-length* to deal with just
>> this case.
>>
>> Is there some way I can deal with this, or are recursive data structures
>> not really supported by Clojure?
>>
>
> The same variables exist in Clojure: *print-level* and *print-length*
> respectively.
>
> - James
>
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