Thanks, Henry. As I suspected, this is a feature which you need to know about.
I wasn’t desperately worried about the application in question, just wondering
how Louis’ solution worked!
Good luck debugging the debugger, should you decide to do so,
Cheers,
Mike
Sent from my iPad
> On 10 Jul 2019, at 12:48, Henry Rich <henryhr...@gmail.com> wrote:
>
> Based on your report (very complete, thanks) I can make a guess at the source
> of the domain error.
>
> It looks like fastincl, which was defined as
>
> fastincl =: cmp 1 : 0
> text
> )
>
> was replaced by
>
> fastincl =: cmp fastincld4B7g0
> fastincld4B7g0 =: 1 : 0
> text
> )
>
> Unfortunately, the replacement was done in that order, so that at the point
> fastincld4B7g0 was first encountered, it was undefined and assumed to be a
> verb. Thus fastincl became defined as a verb hook. When it was executed,
> the name fastincld4B7g0 was resolved, and when it turned out not to be a verb
> as expected, produced domain error.
>
> The replacement in the debugger should be only for verbs. Fixing that will
> make the domain error go away, but it will not make for easy debugging. The
> debugger will look up the name 'fastincl' and find that it is not an explicit
> definition (it contains one, but also the reference to cmp). That will cause
> fastincl to be debugged as a tacit verb, with no access to the individual
> lines. I will have to think about how to fix that problem.
>
> Henry Rich
>
>> On 7/10/2019 3:20 AM, 'Mike Day' via Programming wrote:
>> It's the odd name and the fact that a domain error doesn't arise if you just
>> run the phrase.
>>
>> For the sake of this reply, I've just opened up a new JQt session, and a
>> new script,
>> pasting in the defs I'd listed earlier, then loading and running as
>> described below.
>>
>> Here's the script, with the notated session output appended, at NB. ####...,
>> all below this sign-off.
>> Cheers,
>> Mike
>>
>> NB. copy of minimal script and session output
>>
>> fastmax=: 1 : 0
>> B=. C=. 1"_1 y
>> while. +./C do.
>> i=. C i.1
>> B=. 0 i} B
>> B=. -.@:u&(i{y)&.(B&#) y
>> C=. C *. B
>> B=. 1 i} B
>> end.
>> B#y
>> )
>>
>> cmp=: +./@E.&>
>>
>> fastincl=: cmp fastmax
>>
>> NB. #############################################################
>> NB. notated copy of session
>> load 'c:/d/j807/user/temp/215.ijs' NB. minimal script
>>
>> NB. running without debug
>> fastincl 'abcde'
>> abcde
>> (cmp fastmax) 'abcde'
>> abcde
>>
>>
>> NB. invoke debug with Run/Debug OR ctrl-K
>> NB. In debug window, select "fastmax" using "Stop Manager",
>> NB. and choose "Stop All Lines"
>>
>> NB. Invoke it as follows:
>>
>> NB. a) indirectly via "fastincl", the derived verb, on any string
>>
>> fastincl 'abcde'
>>
>> NB. immediate display in "debug" ...
>> NB. top output pane:
>> NB. >[0] cmp fastincld4B7g0 NB. Where does this name arise?
>>
>> NB. other two panes show:
>>
>> NB. domain error
>> NB. fastincl[header] cmp fastincl
>>
>> NB. cmp v +./@E.&>
>> NB. fastincl v cmp fastincld4B7g0
>>
>> NB. check names
>>
>> names 3
>> cmp fastincl
>> names 1 NB. what is fastincld4B7g0 ?!?!
>> fastincld4B7g0 fastmax
>>
>> clear''
>> names 1
>>
>>
>> load 'c:/d/j807/user/temp/215.ijs'
>> NB. set up "debug" as before
>>
>> NB. rerun with (cmp fastmax) rather than "fastincl"
>> (cmp fastmax) 'abcde' NB. can step through line by line in "debug" as
>> usual
>>
>>
>>
>>
>>> On 10/07/2019 00:43, Henry Rich wrote:
>>> I haven't tried to recreate this yet, but: what is the problem? Should it
>>> not get a domain error? Or is it the odd name 'fastincld4B7g0'?
>>>
>>> Henry Rich
>>>
>>>> On 7/9/2019 6:35 PM, 'Mike Day' via Programming wrote:
>>>> 9.0 beta and 8.07 - JQt -Windows 10
>>>> M
>>>> Sent from my iPad
>>>>
>>>>> On 9 Jul 2019, at 23:32, bill lam <bbill....@gmail.com> wrote:
>>>>>
>>>>> what is the JVERSION ?
>>>>>
>>>>> On Wed, Jul 10, 2019, 1:27 AM 'Mike Day' via Programming <
>>>>> programm...@jsoftware.com> wrote:
>>>>>
>>>>>> Something for Henry, I think.
>>>>>>
>>>>>> Starting to have a look at Louis' variants on Vadim's approach, I tried
>>>>>> using debug on "fastincl" , invoked by ctrl-K.
>>>>>>
>>>>>> Setting stop on all lines in either fastincl =: cmp fastmax
>>>>>> or in fastmax and then running
>>>>>> fastincl lines
>>>>>> results in
>>>>>> "
>>>>>> domain error
>>>>>>
>>>>>> fastincl[header] cmp fastincl
>>>>>>
>>>>>> "
>>>>>>
>>>>>> in debug's middle pane,
>>>>>>
>>>>>> with
>>>>>>
>>>>>> "
>>>>>>
>>>>>>> [0] cmp fastincld4B7g0
>>>>>> "
>>>>>>
>>>>>> displayed in the top pane
>>>>>>
>>>>>> The lowest pane displays:
>>>>>>
>>>>>> "
>>>>>>
>>>>>> cmp v +./@E.&>
>>>>>>
>>>>>> fastincl v cmp fastincld4B7g0
>>>>>>
>>>>>> "
>>>>>>
>>>>>>
>>>>>> This happens in both J 9.01 beta and J 8.07, under Windows 10 .
>>>>>>
>>>>>> Debug seems ok however when explicitly running "(cmp fastmax) lines "
>>>>>>
>>>>>> So it's probably something to do with fastmax being an adverb, but here
>>>>>> are
>>>>>> Louis' definitions to save hunting for them in the correspondence:
>>>>>>
>>>>>> fastmax=: 1 : 0
>>>>>> B=. C=. 1"_1 y
>>>>>> while. +./C do.
>>>>>> i=. C i.1
>>>>>> B=. 0 i} B
>>>>>> B=. -.@:u&(i{y)&.(B&#) y
>>>>>> C=. C *. B
>>>>>> B=. 1 i} B
>>>>>> end.
>>>>>> B#y
>>>>>> )
>>>>>>
>>>>>> cmp=: +./@E.&>
>>>>>>
>>>>>> fastincl=: cmp fastmax
>>>>>>
>>>>>> debug behaves just the same for
>>>>>>
>>>>>> fastincl 'abc'
>>>>>>
>>>>>> so I won't bother defining "lines" here.
>>>>>>
>>>>>> This is probably known behaviour, but it's new to me!
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Mike
>>>>>>
>>>>>>
>>>>>>
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