[racket] Determining if already defined?

identifier-binding
<http://docs.racket-lang.org/reference/stxcmp.html#%28def._%28%28quote._~23~25kernel%29._identifier-binding%29%29>
returns
#f for a binding that is either unbound or a top-level definition

On Fri, Nov 14, 2014 at 2:27 PM, Kevin Forchione <lysseus at gmail.com> wrote:

> Hi guys,
> Is there a way to determine, from within a macro, if something is already
> defined and, so that the macro can define it if not and skip the definition
> if not?
>
> -Kevin
> ____________________
>   Racket Users list:
>   http://lists.racket-lang.org/users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.racket-lang.org/users/archive/attachments/20141114/27861c55/attachment.html>