Thanks Marc, that bug is now fixed by

  x=. ,&.> boxopen x

Втр, 05 Июн 2012, Marc Simpson писал(а):
> While tinkering with 'convert/json' this evening I encountered a problem in
> retrieving single-character keys from a decoded JSON object.
> 
> Here's a simple example:
> 
>    b1 =: dec_json'{ "a": 1, "b": 2}'
>    b2 =: dec_json'{"cd": 3,"ef": 4}'
> 
>    'a' gethash_json b1
> _1
>    'b' gethash_json b1
> _1
>    'cd' gethash_json b2
> +-+
> |3|
> +-+
>    'ef' gethash_json b2
> +-+
> |4|
> +-+
> 
> i.e., retrieval from 'b2' works as expected while single character key
> lookup in 'b1' fails. The problem seems to be that single character keys
> aren't being raveled prior to boxing:
> 
>    ({.boxopen'a') e. {.b1
> 0
>    ({.boxopen,'a') e. {.b1
> 1
> 
> Am I overlooking something obvious (or misusing gethash_json)? If not,
> here's a simple fix,
> 
> gethash_json=: 4 : 0
> assert. 2=$$y
> assert. 32=3!:0 y
> x=. boxopen ,x NB. fix
> assert. 1=$x
> if. ({.x) e. {.y do.
>   ({:y){~({.y) i. {.x
> else.
>   _1
> end.
> )
> 
> Best,
> M
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm

-- 
regards,
====================================================
GPG key 1024D/4434BAB3 2008-08-24
gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm

Reply via email to