Okay Henry,
I started a fresh session
JVERSION
Engine: j901/j64avx2/darwin
Beta-m: commercial/2019-10-02T11:28:59
Library: 9.01.10
Qt IDE: 1.8.3/5.12.3
Platform: Darwin 64
Installer: J901 install
InstallPath: /users/bobtherriault/j901
Contact: www.jsoftware.com
Opened debug (no verbs)
loaded the following script from a temp file
cocurrent 'base'
require 'plot'
MAXITER=: 50 NB. safety long-stop
S=: 100 NB. height above ground (m) - UPDATED
T=: 0 NB. time at end of current epoch (s) - UPDATED
e=: 0.1 NB. time interval of simulation epoch (s) - CONST
U=: 0 NB. starting velocity (m/s) - CONST
V=: U NB. velocity at end of current epoch (s) - UPDATED
g=: 9.81 NB. acceleration due to gravity at earth surface (m/s^2) - CONST
NB.mean =: +/ % # NB. definition of mean - VERB
trajectory=: monad : 'u F: v y'
u=: monad define
NB. Trajectory of solid object in free-fall
_3 Z: MAXITER NB. Stop Fold when there have been too many iterations
_2 Z: S<:0 NB. Stop Fold when object hits the ground
NB. Recurrence relation is based on free-fall formula: V = U + gt
V=: y + g*e NB. free-fall: vertical velocity at end of epoch
S=: S - e*mean y,V NB. free-fall: vertical height at end of epoch
T=: T + e NB. time of flight at end of epoch
if. S<:0 do. smoutput '+++ LANDED: T=',":T end.
V return.
)
v=: monad : 'S'
plot trajectory U
Note that 'mean' is commented out, and when I loaded this script the session
crashed.
I am emailing the crash report directly to you.
Let me know if there is anything else you require.
Cheers, bob
> On Oct 17, 2019, at 3:51 PM, Henry Rich <[email protected]> wrote:
>
> Certainly, if you have a crash I'd like to know about it. What I need is a
> script that will crash when run from a fresh session.
>
> Henry Rich
>
> On 10/17/2019 6:47 PM, 'robert therriault' via Beta wrote:
>> Sorry about that Henry, I have updated now.
>>
>> On the last run, I ended up having to go into the Activity Monitor to force
>> quit the J process.
>>
>> When I reopened the session, I updated the addons (including base) and
>> restarted and the reloaded the project that the trajectory script was in.
>> When I loaded that script the first time:
>>
>> load '/users/bobtherriault/j901-user/projects/enhanced/jig6.ijs'
>> |fold limit: trajectory
>> | u F:v y
>> |[-346] /users/bobtherriault/j901-user/projects/enhanced/jig6.ijs
>>
>> Subsequent loading of the script results in everything running smoothly even
>> after executing clear '' plots display as expected
>>
>> Loading with mean commented out and debug off I get
>>
>> load '/users/bobtherriault/j901-user/projects/enhanced/jig6.ijs'
>> |value error: trajectory
>> | u F:v y
>> |[-346] /users/bobtherriault/j901-user/projects/enhanced/jig6.ijs
>>
>> Turning debug on after executing clear '' of course revealed no verbs in the
>> base locale. Loading the script again caused J to crash ( I can send the
>> crash report if that is useful)
>>
>> Restarting J and running the script I once again get the expected:
>>
>> load '/users/bobtherriault/j901-user/projects/enhanced/jig6.ijs'
>> |value error: trajectory
>> | u F:v y
>> |[-346] /users/bobtherriault/j901-user/projects/enhanced/jig6.ijs
>>
>> Then I clear '' and this time load the script first and then start the
>> debugger (the default is trajectory). Loading script crashes again ( crash
>> report saved for this one as well)
>>
>> Let me know if you want the crash reports.
>>
>> Cheers, bob
>>
>>> On Oct 17, 2019, at 3:17 PM, Henry Rich <[email protected]> wrote:
>>>
>>> You have not updated the dev/fold addon to 1.0.5 level.
>>>
>>> Henry Rich
>>>
>>> On 10/17/2019 6:14 PM, 'robert therriault' via Beta wrote:
>>>> Hi Gilles,
>>>>
>>>> When I comment out the definition of mean and then clear the base locale
>>>> and run with debug on I get the following in the top pane of the debugger
>>>> I get 59 lines with a '>' indicating line 41 (would be simpler if I could
>>>> copy the results that show up in the pane but don't know how).
>>>>
>>>> In the second pane I get:
>>>> value error
>>>> Fold_j_[41] 13!:8 ] 13!:11''[FoldZv_j_=:fzv
>>>> trajectory[0] u F: v y
>>>> script[0] {: 3 : '0!:0 y [ 4!:55<''y''' jpath_z_&.:>
>>>> fn[tacit] script
>>>> load[7] fn fl
>>>> load[0] 0 load y
>>>>
>>>> I am not sure how to interpret that, but is the result that I get. I am
>>>> running it by loading a script with the definitions and final line:
>>>>
>>>> plot trajectory U
>>>>
>>>> I get the same result running that line in the Qt IDE
>>>>
>>>> And now the debugger has become non operational. Buttons do highlight, but
>>>> do not do anything and the debugger will not clear or exit. The script
>>>> window can be edited and loaded but the execution window only responds
>>>> with the load command and does not update. Toggling between windows does
>>>> not include the debug window, although it can be selected when clicked on.
>>>>
>>>> Hope this helps!
>>>>
>>>> Cheers, bob
>>>>
>>>>
>>>>
>>>>> On Oct 17, 2019, at 2:26 PM, Gilles Kirouac <[email protected]> wrote:
>>>>>
>>>>> Bob
>>>>>
>>>>> The trajectory script uses *mean* in the definition of u. If you run
>>>>> trajectory *without* the definition of mean, it should result in a
>>>>> value error. Right?
>>>>>
>>>>> Now run the same under the J debugger to see if it can pinpoint that
>>>>> the value error is on *mean*.
>>>>>
>>>>> I will do the same on Win10 shortly.
>>>>>
>>>>> ~ Gilles
>>>>>
>>>>> Le 2019-10-17 à 17:05, 'robert therriault' via Beta a écrit :
>>>>>> Trajectory runs fine for me on a Mac.
>>>>>>
>>>>>> JVERSION
>>>>>> Engine: j901/j64avx2/darwin
>>>>>> Beta-m: commercial/2019-10-02T11:28:59
>>>>>> Library: 9.01.08
>>>>>> Qt IDE: 1.8.3/5.12.3
>>>>>> Platform: Darwin 64
>>>>>> Installer: J901 install
>>>>>> InstallPath: /users/bobtherriault/j901
>>>>>> Contact: www.jsoftware.com
>>>>>>
>>>>>> I note that the Qt IDE and the libraries differ from Gilles, but this
>>>>>> would be natural for a different operating system, right?
>>>>>>
>>>>>> Cheers, bob
>>>>>>
>>>>>>> On Oct 17, 2019, at 1:51 PM, Henry Rich <[email protected]> wrote:
>>>>>>>
>>>>>>> I don't have Linux. It runs correctly on Windows for me.
>>>>>>>
>>>>>>> Henry Rich
>>>>>>>
>>>>>>> On 10/17/2019 4:30 PM, Gilles Kirouac wrote:
>>>>>>>> I am now getting an interpreter crash.
>>>>>>>>
>>>>>>>> I updated three scripts through PacMan. dev/fold is now at level
>>>>>>>> 1.0.5. Then ran the same Trajectory script. Without the debugger, I get
>>>>>>>> the normal value error: trajectory. Doing the same with the J debugger
>>>>>>>> but with the J session run under gdb here is the result:
>>>>>>>>
>>>>>>>>
>>>>>>>> gilles@T530gk ~/j901 $ gdb bin/jqt
>>>>>>>> ...
>>>>>>>> (gdb) run
>>>>>>>> Starting program: /home/gilles/j901/bin/jqt
>>>>>>>> [Thread debugging using libthread_db enabled]
>>>>>>>> Using host libthread_db library
>>>>>>>> "/lib/x86_64-linux-gnu/libthread_db.so.1".
>>>>>>>> [New Thread 0x7fffe4b49700 (LWP 8058)]
>>>>>>>>
>>>>>>>> Thread 1 "jqt" received signal SIGSEGV, Segmentation fault.
>>>>>>>> 0x00007fffda5cd1ed in suspset () from /home/gilles/j901/bin/libj.so
>>>>>>>> (gdb)
>>>>>>>>
>>>>>>>> I did it twice to make sure I was not doing something silly.
>>>>>>>>
>>>>>>>> ~ Gilles
>>>>>>>>
>>>>>>>> Le 2019-10-17 à 11:51, Henry Rich a écrit :
>>>>>>>>> Gilles,
>>>>>>>>>
>>>>>>>>> I have modified the Fold script so that it allows messages from
>>>>>>>>> execution of the user's verb to be displayed and debugged. Use
>>>>>>>>> Package Manager to update dev/fold - no need for a new beta.
>>>>>>>>>
>>>>>>>>> I hope that suits better.
>>>>>>>>>
>>>>>>>>> Henry Rich
>>>>>>>>>
>>>>>>>>> On 10/11/2019 11:27 AM, Gilles Kirouac wrote:
>>>>>>>>>> I installed beta-k then m on Linuxmint 64b
>>>>>>>>>>
>>>>>>>>>> My desktop directory is named Bureau, not Desktop. The installer is
>>>>>>>>>> thus
>>>>>>>>>> unable to install shortcuts on Desktop. Minor annoyance. I created a
>>>>>>>>>> link to Bureau for next time. May be suggest to do so in install
>>>>>>>>>> instructions. I added a few qt5 missing packages.
>>>>>>>>>>
>>>>>>>>>> With the current IDE, to find the syntax of std lib utilities (e.g.
>>>>>>>>>> dates, files, strings, text), I have to go through Help, Help, Usr,
>>>>>>>>>> Standard Library, ... More importantly I have to KNOW that the std
>>>>>>>>>> lib
>>>>>>>>>> doc is there.
>>>>>>>>>>
>>>>>>>>>> Do you think a newcomer will easily explore to that level? The
>>>>>>>>>> Library
>>>>>>>>>> is a selling point. It should be easy to get to. And IMO the Lib is
>>>>>>>>>> more
>>>>>>>>>> useful to anyone than Foreigns.
>>>>>>>>>>
>>>>>>>>>> Two years ago, I proposed to add a line to the Help Menu pointing to
>>>>>>>>>> the
>>>>>>>>>> std lib doc. IIRC the proposal was accepted, but ... so I reiterate.
>>>>>>>>>>
>>>>>>>>>> Having launched jqt through a terminal, I received the following:
>>>>>>>>>>
>>>>>>>>>> QPaintDevice::metrics: Device has no metric information
>>>>>>>>>>
>>>>>>>>>> Should I worry?
>>>>>>>>>>
>>>>>>>>>> I briefly experimented with Fold after reading the Release Notes.
>>>>>>>>>> Those
>>>>>>>>>> could include a link to
>>>>>>>>>> https://code.jsoftware.com/wiki/Vocabulary/fcap,
>>>>>>>>>> which I found through a web search.
>>>>>>>>>>
>>>>>>>>>> I tried to run the Trajectory example from that page and got a value
>>>>>>>>>> error. Where? A visual look at the script revealed a susceptible
>>>>>>>>>> culprit: mean. Added require 'stats/base' and it ran.
>>>>>>>>>>
>>>>>>>>>> While trying the Trajectory, I ran the script with the debugger. [The
>>>>>>>>>> debugger did not fail, great!] The value error on mean was not
>>>>>>>>>> obvious.
>>>>>>>>>> The stack is given as:
>>>>>>>>>> value error
>>>>>>>>>> Fold_j_[40] 13!:8]13!:11''[FoldZv_j_=:fzv
>>>>>>>>>> trajectory[0] u F: v y
>>>>>>>>>>
>>>>>>>>>> This Trajectory example is a simple case. I suspect that errors in
>>>>>>>>>> more
>>>>>>>>>> complex cases may not be easy to analyze.
>>>>>>>>>>
>>>>>>>>>> From a notational point of view, the Fold family is a great
>>>>>>>>>> addition, I
>>>>>>>>>> think.
>>>>>>>>>>
>>>>>>>>>> JVERSION
>>>>>>>>>> Engine: j901/j64avx/linux
>>>>>>>>>> Beta-m: commercial/2019-10-02T09:15:44
>>>>>>>>>> Library: 9.01.10
>>>>>>>>>> Qt IDE: 1.8.1/5.5.1
>>>>>>>>>> Platform: Linux 64
>>>>>>>>>> Installer: J901 install
>>>>>>>>>> InstallPath: /home/gilles/j901
>>>>>>>>>> Contact: www.jsoftware.com
>>>>>>>>>> ~ Gilles
>>>>>>>>>>
>>>>>>>>>> ----------------------------------------------------------------------
>>>>>>>>>> For information about J forums see
>>>>>>>>>> http://www.jsoftware.com/forums.htm
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>>>>>>> https://www.avg.com
>>>>>>>
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