How is this a regression? It doesn't cause any code that used to work to stop working.
The fact that tail destructuring now causes non-sequential collections to be
destructured by sequential destructuring should be just considered an instance
of GIGO and an implementation detail.
> On 4 Jun 2016, at 07:33, Atamert Ölçgen <mu...@muhuk.com> wrote:
>
>
>
> On Sat, Jun 4, 2016 at 9:28 AM, <676c7...@gmail.com> wrote:
> This isn’t only an optimisation but also a change in behaviour, isn’t
> it?
>
> Clojure 1.9.0-alpha3:
>
> user=> (let [[x & xs] #{1 2 3}] x)
> UnsupportedOperationException nth not supported on this type:
> PersistentHashSet clojure.lang.RT.nthFrom (RT.java:948)
>
> Clojure 1.9.0-alpha4:
>
> user=> (let [[x & xs] #{1 2 3}] x)
> 1
>
> I hope this will be considered a regression and the old behavior will be
> restored.
>
>
>
> Perhaps the documentation needs to be updated?
> http://clojure.org/reference/special_forms#_vector_binding_destructuring
>
>
> --
> David
>
>
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> Kind Regards,
> Atamert Ölçgen
>
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