Clojure does support forward referencing (if I understand your
question):
user=> (declare a)
user=> (defn b [x] (a x))
user=> (defn a [x] (b x))
user=> (a 4)
java.lang.StackOverflowError
Note: (declare a) is a synonym for (def a) which works also.

It is also quite trivial to patch the compiler to auto-def symbols as
it finds them instead of throwing an error. That makes it hard to
discover typoed symbols. One strategy to have the best of both worlds
would be to allow auto-def until a non-def call is made, and at that
point warn if there are any unbound. Not quite correct for a fully
dynamic language.


Regards,
Tim.

On Mar 12, 2:23 am, quasar <quasistellarli...@gmail.com> wrote:
> It seems it makes Clojure source code to be in the order of lowest-to-
> highest abstraction.
> Naive mutual recursion based on top-level functions is impossible.
> I am curious, is it due to the current implementaiton of Reader or by
> design?
>
> Best regards,
> Leonid
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