Todd <t.greenwoodg...@gmail.com> writes:
> 3. alter ref2 to have a reference (pointer) to ref1
>
> user=> (dosync (ref-set aref2 {:a aref1}))
> {:a #<r...@98adae2: {:a #<r...@7b283052: {:a #<r...@98adae2: {:a
> #<r...@7b283052: {:a #<r...@98adae2: {:a #<r...@7b283052: {:a
> #<r...@98adae2: {:a #<r...@7b283052: {:a #<r...@98adae2: {:a
> #<r...@7b283052: {:a #<r...@98adae2: {:a #<r...@7b283052: {:a
>
> <SNIP...>
>
> {:java.lang.StackOverflowError
>
> <SNIP...>
>
> 4. So, I've got a stack overflow... What's the proper way to deal with
> this? Are circular references like this not allowed?
Circular references are allowed, the problem is with the repl trying to
print them. You can set the *print-level* var to put a limit on how
deep the printer will go.
user> (set! *print-level* 8)
8
user> aref1
#<r...@64b37089: {:a #<r...@2f600492: {:a #<r...@64b37089: {:a
#<r...@2f600492: {:a #}>}>}>}>
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