[Jprogramming] Repeated application of a verb

[Henry Rich]

You are repeatedly toggling the calculated value between 33 and _33, and 
it never reaches a termination condition.

Henry Rich

On 10/8/2011 4:31 PM, Björn Helgason wrote:
>     (- ^: (trigger */@:-. at e.~ ])^:_ ) 2 3 5 7
> 2 3 5 7
>     (- ^: (trigger */@:-. at e.~ ])^:_ ) 33
>
> goes into a seemingly endless loop
>
> 2011/10/8 Raul Miller<rauldmiller at gmail.com>
>
>> On Sat, Oct 8, 2011 at 12:19 PM, David Vaughan
>> <purpleblues13 at googlemail.com>  wrote:
>>> Could you maybe explain how that tacit verb works (and how it works with
>> 'verb')? Is it something along the lines of, see if the input is not a
>> member of trigger, multiply with trigger to get 0 0 or outp1 outp2, ... then
>> I run out of ideas. :P
>>>
>>> On 8 Oct 2011, at 15:58, R.E. Boss wrote:
>>>
>>>> trigger=: outp1, outp2
>>>>
>>>> verb ^: (trigger */@:-. at e.~ ])^:_ input
>>
>>    outp1=: 2
>>   outp2=: 5
>>   trigger=: outp1, outp2
>>
>>   trigger e.~ 2 3 5 7
>> 1 1
>>   trigger e.~ 1 2 3 4
>> 1 0
>>   trigger e.~ 5 6 7 8
>> 0 1
>>   trigger e.~ 9 10 11 12
>> 0 0
>>
>>   -.1 1
>> 0 0
>>   -.1 0
>> 0 1
>>   -.0 1
>> 1 0
>>   -.0 0
>> 1 1
>>
>>   */0 0
>> 0
>>   */0 1
>> 0
>>   */1 0
>> 0
>>   */1 1
>> 1
>>
>> So (trigger */@:-. at e.~ ]) is 1 when neither element of trigger is
>> present in its right argument and 0 otherwise.
>>
>> Meanwhile verb does whatever you need it to do (but you have not said
>> what that is yet, so we cannot make any useful suggestions there).
>>
>> FYI,
>>
>> --
>> Raul
>> ----------------------------------------------------------------------
>> For information about J forums see http://www.jsoftware.com/forums.htm
>>
>
>
>