Ah, this came in with 1.5:
https://dev.clojure.org/jira/browse/CLJ-910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

On Fri, Jul 20, 2018 at 12:38 PM Gary Trakhman <gary.trakh...@gmail.com>
wrote:

> > The memfn docstring says it can be type hinted to avoid reflection. Any
> reason why it would still be slower then wrapping it in a type hinted
> function?
>
> Neat, I didn't know that! Since each memfn creates a new function, it's
> the same thing as writing it out manually, unlike say 'partial', which is a
> little more indirect, shares a single function and can hit you with JIT
> polymorphism costs.
>
> On Fri, Jul 20, 2018 at 1:53 AM Didier <didi...@gmail.com> wrote:
>
>> The memfn docstring says it can be type hinted to avoid reflection. Any
>> reason why it would still be slower then wrapping it in a type hinted
>> function?
>>
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