Not sure if this is expected or not:
(map (fn [v] {:k v}) #{1 2 3})
=> ({:k 1} {:k 3} {:k 2})
(map #({:k %}) #{1 2 3})
ArityException Wrong number of args (0) passed to: PersistentArrayMap
clojure.lang.AFn.throwArity (AFn.java:429)
*--*
*Eduardo Aquiles Radanovitsck*
On Wed, Jul 29, 2015 at 11:12 PM, Alex Miller <a...@puredanger.com> wrote:
> Thanks, I forwarded this stuff over to Rich. We appreciate people trying
> it and reporting stuff!
>
>
> On Wednesday, July 29, 2015 at 8:23:16 PM UTC-5, Mikera wrote:
>>
>> Hi Alex,
>>
>> 1.8.0-alpha3 is breaking core.matrix at the moment.
>>
>> Root cause appears to be related to how protocols are being handled when
>> used with Java arrays:
>>
>> e.g. for the protocol implementation:
>> (extend-protocol mp/PImplementation
>> (Class/forName "[Ljava.lang.Object;")
>> (implementation-key [m] :object-array)
>> (meta-info [m]
>> {:doc "Clojure.core.matrix implementation for Java Object arrays"})
>> (new-vector [m length] (construct-object-vector (long length)))
>> (new-matrix [m rows columns]
>> (let [columns (long columns)
>> m (object-array rows)]
>> (dotimes [i rows]
>> (aset m i (construct-object-vector columns)))
>> m))
>> (new-matrix-nd [m shape]
>> (construct-nd shape))
>> (construct-matrix [m data]
>> (construct-object-array data))
>> (supports-dimensionality? [m dims]
>> (>= dims 1)))
>>
>> When called as:
>> (clojure.core.matrix.protocols/construct-matrix (object-array 1) [1])
>>
>> Gives exception:
>> VerifyError (class: clojure/core/matrix$eval10586, method: invokeStatic
>> signature: ()Ljava/lang/Object;) Incompatible object argument for function
>> call java.lang.Class.getDeclaredConstructors0 (:-2)
>>
>> On Thursday, 30 July 2015 06:51:18 UTC+8, Alex Miller wrote:
>>>
>>> Clojure 1.8.0-alpha3 is now available.
>>>
>>> Try it via
>>> - Download:
>>> https://repo1.maven.org/maven2/org/clojure/clojure/1.8.0-alpha3
>>> - Leiningen: [org.clojure/clojure "1.8.0-alpha3"]
>>>
>>> Tuples have been disabled after further analysis of performance impacts.
>>>
>>> This alpha has initial support for direct linking which you can enable
>>> with -Dclojure.compiler.direct-linking=true
>>>
>>> Direct linking allows functions compiled with direct linking on to make
>>> direct static method calls to most other functions, instead of going
>>> through the var and the Fn object. This can enable further optimization by
>>> the jit, at a cost in dynamism. In particular, directly-linked calls will
>>> not see redefinitions.
>>>
>>> In alpha3, clojure.core is compiled with direct linking by default and
>>> therefore other namespaces cannot redefine core fns and have those
>>> redefinitions seen by core code.
>>>
>>> Functions declared as dynamic will never be linked to directly.
>>>
>>> As with all alphas, this represents ongoing work-in-progress that is
>>> subject to change.
>>>
>> --
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