Hi Erling,
This might be repetitive because I have not read carefully the responses to
your question.
Allow me to try to illustrate the issue using =:: first. The Jx verb =::
can be modeled using the explicit,
cop=. '(x)=: y'(dyad :)
The sentence,
(p , 0 $ 'p' =:: ]) 'erling'
|value error: p
| (p,0$'p'=::])'erling'
|[-4]
fails for the same reason, whatever it is, that the sentence,
(p , 0 $ 'p' cop ]) 'erling'
|value error: p
| (p,0$'p'cop])'erling'
|[-1]
fails.
You can get what you want using instead,
(".@:('p'"_) , 0 $ 'p' cop ]) 'erling'
erling
p
erling
or
erase'p'
1
(".@:('p'"_) , 0 $ 'p' =:: ]) 'erling'
erling
p
erling
since =.. is easier to type and it is equivalent to =:: unless =.. is used
within an explicit environment (beware of the standard library verb load).
I hope it helps,
PS. Personally, I do not rely on the actual current sequential execution
of the tines of forks because I dream of the day when j/jx can execute them
in parallel.
On Sun, Oct 8, 2017 at 10:32 AM, Erling Hellenäs <[email protected]>
wrote:
> I also remember it as extremely nice and friendly a long time ago. /Erling
>
>
> On 2017-10-08 16:19, Roger Hui wrote:
>
>> Many people here have a habit of giving long lectures to people about
>>> things they already know to make it appear like they are totally stupid
>>> and they themselves are very clever and are teaching this stupid person
>>> even the most basic things. /Erling
>>>
>> At 2004-10-21 09:44:37 -0400, Eric Iverson sent a message to the J Forum (
>> http://www.jsoftware.com/pipermail/general/2004-October/018558.html)
>> which
>> included the following sentence:
>>
>> The J Forum was a particular joy for Ken [Iverson]. He was an avid reader
>> and was amazed and pleased with the civility.
>>
>>
>> I would like to see continuation of this civility, and posters avoid
>> name-calling and other negative insinuations. The J Forum and J community
>> are an amazing resource and the civility is a main reason for it.
>> ----------------------------------------------------------------------
>> For information about J forums see http://www.jsoftware.com/forums.htm
>>
>
>
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
----------------------------------------------------------------------
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