[Jprogramming] J902 beta program started

Joey K Tuttle jkt at qued.com
Thu May 14 21:32:17 UTC 2020


Installed under OS X 10.14.6 easily - but I'm puzzled why "my" benchmark 

   timex '%. 1000 1000 ?@$ 0'

takes more than twice as much cpu compared to j901...  (space used is identical)

> On 2020May 14, at 14:27, Henry Rich <henryhrich at gmail.com> wrote:
> 
> This beta has a few language changes:
> 
> * Fold (u F:. v) has been redefined to execute v first, then, u
> 
> * u0`u1`... at v now has infinite rank.  v is executed first to decide the cell-rank, and which verb is to be executed for each cell; then the u verbs are executed, either one cell at a time or in one call to each verb, to execute on a list of cells at once. Therefore, each u verb needs to be able to handle single cell or a list of input cells.
> 
> * semiduals are supported at last: x u&.:(v`a:) y applies v only to x, and x u&.:(a:`v) y applies v only to y.
> 
> Henry Rich
> 
> On 5/14/2020 3:49 PM, Eric Iverson wrote:
>> The first 902 beta release is available for windows/macos/linux.
>> 
>> https://code.jsoftware.com/wiki/System/Installation/J902
>> 
>> Availability of new releases will be announced here.
>> 
>> Questions, problems, etc should be addressed to the beta forum.
>> ----------------------------------------------------------------------
>> For information about J forums see http://www.jsoftware.com/forums.htm
> 
> 
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> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm



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