I suppose I could, but that would make some things such as using letfn
for my rules impossible when the rules are mutually recursive.
In any case, it doesn't change the fact that, though functions now
have metadata, there is no way to give functions defined letfn that
metadata. This would be useful in any other case involving function
metadata, such as in logging, or tracking callings. So far, I cannot
think of any good reason to reject this proposal.
On May 24, 12:36 pm, Sean Devlin <francoisdev...@gmail.com> wrote:
> It doesn't sound like your metadata is metadata any more.
>
> Should you be proxying AFn instead?
>
> On May 24, 3:24 pm, joshua-choi <rbysam...@gmail.com> wrote:
>
>
>
>
>
> > I have a language request for the fn special form.
>
> > Functions can now have metadata. This is great, and very useful for
> > me.
>
> > I'd like to request that now the (fn name …) form pass on any metadata
> > on the name symbol to the function itself:
>
> > user=> (meta (fn ^{:a 3} name …))
> > {:a 3}
>
> > This would ideally come especially in handy in letfn:
>
> > user=> (letfn [(^{:a 3} some-fn …)] (meta some-fn))
> > {:a 3}
>
> > The above is currently impossible at all; def must be used instead.
> > The proposal above would make it possible, and it would be a logical
> > extension of enabling metadata on functions.
>
> > This matters especially for me, because I use function metadata in my
> > parser library's rules to validate rules, store rule labels, and other
> > things. I would love for this to happen, and I'd like to know the
> > prospects of this feature being implemented for Clojure 1.3.
>
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