Thought:
(defmacro as->
[expr name & forms]
`(let [~name ~expr
~@(interleave (repeat name) (butlast forms))]
~(last forms)))
On Sunday, October 5, 2014 1:02:50 AM UTC+2, Jan-Paul Bultmann wrote:
>
> Hey,
> I just noticed that while recur can be the last statement in most
> threading macros,
> it can’t be used within an `as->` macro.
>
> user=> (macroexpand '(-> x (recur)))
> (recur x)
>
> user=> (macroexpand '(as-> x % (recur %)))
> (let* [% x % (recur %)] %)
>
> This means that a recur within a `as->` will cause a CompilerException,
> because it is not at the tail position.
>
> Thoughts?
>
> Cheers,
> Jan-Paul
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