thanks Ken
Sunil
On Thu, Nov 25, 2010 at 11:41 AM, Ken Wesson <kwess...@gmail.com> wrote:
> On Thu, Nov 25, 2010 at 1:06 AM, Sunil S Nandihalli
> <sunil.nandiha...@gmail.com> wrote:
> > Hello everybody,
> > Is there a function which can tell me if a particular symbol was
> generated
> > by gensym or was present in the code?
> > Sunil.
>
> I don't think so.
>
> On the other hand:
>
> (def my-gensyms (atom #{}))
>
> (defn my-gensym
> ([]
> (let [s (gensym)]
> (swap! my-gensyms conj s)
> s))
> ([prefix]
> (let [s (gensym prefix)]
> (swap! my-gensyms conj s)
> s)))
>
> (defn is-my-gensym? [s]
> (contains? @my-gensyms s))
>
> will let you create gensyms with my-gensym and later check is a symbol
> was created with is-my-gensym?.
>
> Warning: a hashset grows in memory for every gensym created with my-gensym.
>
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