I am a bit puzzled, I did a quick test and rebinding using a declare
should work (outside of your sample code). I have a reminiscence of a
similar problem I encountered before version 1.0 and used a def to solve my
problem at the time.
But the small test I just made with 1.2 is working.
There's a context issue I do not quite grasp here... or I am aging fast...
Luc.
Cameron Pulsford <cpuls...@gmail.com> wrote ..
> Interesting results.
>
> By putting (println compiled-ops) it worked, but not by putting it in
> a doall. (same error)
>
> Changing my declares to defs did the trick did though and learning
> about bound-fn* was also a serious mind-expander for me right now too.
>
> Thanks to both of you!
>
> On Sep 6, 4:57 pm, Jarkko Oranen <chous...@gmail.com> wrote:
> > Cameron Pulsford wrote:
> > > Is there a way to do this? Besides cleaning up function signatures is
> > > this a premature optimization to begin with?
> >
> > > (declare *macros*)
> >
> > > (defn macro-expand [tokens]
> > > (map #(get *macros* % %) tokens))
> >
> > > (defn compile-op [op]
> > > (macro-expand op))
> >
> > > (defn assemble [{:keys [macros syms blks fncs]}]
> > > (binding [*macros* macros] ;; I thought binding would handle this,
> > > but I must be misusing it
> > > (let [compiled-ops (map compile-op fncs)]
> > > compiled-ops)))
> >
> > Your problem is that compiled-ops is a lazy sequence, and it only gets
> > realised when it's used, which probably happens after it has exited
> > the dynamic scope where *macros* is bound.
> >
> > You can work around the problem by forcing the sequence with doall or
> > by using bound-fn* to save the dynamic environment (ie. (map (bound-
> > fn* compile-op) fns), though double check that from the docs)
>
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