Hi Shawn,
Huh, I *thought* the def worked before, I could have sworn that it did, but
now that I try it again I got the same error as you did. Once I renamed it
the proxy works as I would expect.
Thanks for trying it out, and apologies for the noise. :)
-tree
On Sun, Sep 7, 2008 at 7:45 PM, Shawn Hoover <[EMAIL PROTECTED]> wrote:
>
> On Sun, Sep 7, 2008 at 2:55 PM, Tom Emerson <[EMAIL PROTECTED]> wrote:
>
>> Hi folks,
>> I'm trying to use the proxy support to provide a filter to
>> java.io.File#listFiles and am not having any luck: I'm sure I'm doing
>> something stupid, and would appreciate some tips. Here's what I'm doing:
>>
>> (import '(java.io File FilenameFilter))
>>
>> (def filter (proxy [FilenameFilter] []
>> (accept [dir name]
>> (. name (endsWith "_2.jpg"))))
>>
>> (def the-dir (new File "/Users/tree/images"))
>>
>> (map #(. %1 getCanonicalPath)
>> (. the-dir (listFiles filter)))
>>
>>
>> When I evaluate this, I get an IllegalArgumentException:
>>
>> java.lang.IllegalArgumentException: No matching method found: listFiles
>> java.lang.IllegalArgumentException: No matching method found: listFiles
>> at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:62)
>> at clojure.lang.Reflector.invokeInstanceMethod(Reflector.java:26)
>> at clojure.lang.Compiler$InstanceMethodExpr.eval(Compiler.java:1087)
>> at clojure.lang.Compiler$InvokeExpr.eval(Compiler.java:2568)
>> at clojure.lang.Compiler.eval(Compiler.java:3780)
>> at clojure.lang.Repl.main(Repl.java:75)
>>
>> If I don't include the filter in the call to the listFiles method, then it
>> works fine.
>>
>
> Did the def of filter succeed for you? When I tried your code, I got an
> error "Name conflict, can't def filter because namespace: user refers
> to:#'clojure/filter". Then if I proceed and try to do the map operation, I
> get the no matching method found error because filter is the fn
> clojure/filter, not a FilenameFilter.
>
> --Shawn
>
> >
>
--
Tom Emerson
[EMAIL PROTECTED]
http://www.dreamersrealm.net/~tree
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