I agree your proposal can be useful for developers, but it also introduce a change in behavior that has been there for many years. The next qt will add the following line
finalize_jqtide_^:(3=(4!:0)@<) 'finalize_jqtide_' so that a user can customize or override wdhandler or any other functions and can survive addon updates. Вс, 22 май 2016, Raul Miller написал(а): > I think that avoiding coping measures on the grounds that at some > future point in time a proper fix should be done is wrong. > > The right time for avoiding those coping measures is when that proper > fix is available. > > If the issue is motivation, you need that anyways - but having a > system which can be used in the mean time is important for motivation. > > Thanks, > > -- > Raul > > > On Sun, May 22, 2016 at 1:02 PM, bill lam <bbill....@gmail.com> wrote: > > Infinite loop is bug, but replacing ok box with interrupt button > > is not a proper fix to the gl paint problem. So far gl paint is > > the only case that results in an infinite loop, so that I would > > prefer a proper fix to the gl paint problem itself. > > > > I suspect it is a deficiency of Qt graphic backend, since popup > > box is at the top of z-order, the presence or absence of popup box > > should not interfere the other windows. > > > > Вс, 22 май 2016, Jan-Pieter Jacobs написал(а): > >> I also happened to run into the infinite popup problem, both when trying to > >> get started writing J GUI's (gave up because of this) and when using plot > >> (accidentally not specifying options in the way they should be). > >> > >> I agree that in that last case, it was probably a bug in the plot package, > >> but in my opinion, the user or developper should never irrevokably loose > >> control over the environment under whatever circumstance, also not when > >> it's due to his own ignorance, or a bug in a package he's using. Certainly > >> not when trying to promote J as the ideal tool for interactive > >> experimentation. > >> > >> If all experimentation should be stored in scripts, how is the workflow > >> still so different from that of compiling languages? > >> > >> So I would be a huge fan of a feature like an interrupt button for > >> repeating popups, or making jbreak cleanly interrupt this kind of endless > >> loops. > >> > >> Just my two cents. > >> > >> Jan-Pieter > >> On May 20, 2016 12:41 PM, "Raul Miller" <rauldmil...@gmail.com> wrote: > >> > >> > Has this been a big problem, for you? For anyone? > >> > > >> > The problem of being a J programmer and losing control of the system > >> > is an immediate problem, and I think it's a bigger problem. > >> > > >> > Also, for those hypothetical end users who might be "confused" by an > >> > option, it would be possible to "remove choices on their behalf" if > >> > that were actually important. (That might be somewhat arrogant, > >> > though, since this "removal" does not seem to improve anything for > >> > them.) > >> > > >> > -- > >> > Raul > >> > > >> > > >> > On Fri, May 20, 2016 at 5:48 AM, bill lam <bbill....@gmail.com> wrote: > >> > > IMO errors reported in wdhandler reflect there are some > >> > > programming bugs or unexpected behavior. If it occurs in > >> > > production systems then end users who have no J knowledge should > >> > > whatsapp the screen shot to the developer. Providing more choices > >> > > will confuse end users further. > >> > > > >> > > Пт, 20 май 2016, Raul Miller написал(а): > >> > >> I am seeing some odd things here. One of which is that the previous > >> > >> documentation for wdquery -- > >> > >> http://www.jsoftware.com/docs/help701/user/script_winlib.htm#wdquery > >> > >> -- seems to no longer be valid. Another is that I can not find > >> > >> documentation for wdquery for the current release. (And I am seeing > >> > >> other oddities in behavior, but I am going to stop trying to enumerate > >> > >> those oddities with those two observations.) > >> > >> > >> > >> Anyways, perhaps wdhandler should be changed, replacing > >> > >> > >> > >> wdinfo 'wdhandler';'error in: ',wd_fn,wd_err > >> > >> > >> > >> with something like > >> > >> > >> > >> if. 0~:wdquery 'wdhandler';'error in: > >> > ',wd_fn,wd_err,LF,'continue?' do. > >> > >> echo 'DISABLED_',wd_fn > >> > >> ('DISABLED_',wd_fn)=: (5!:1<wd_fn)5!:0 > >> > >> erase wd_fn > >> > >> end. > >> > >> > >> > >> (but, beware email induced line wrap) > >> > >> > >> > >> In other words: > >> > >> > >> > >> [1] Give the user the opportunity to continue. Depending on details of > >> > >> other parts of the system, this may or may not result in further > >> > >> problems. > >> > >> > >> > >> [2] If the user opts not to continue, set aside the definition of the > >> > >> current event handler (which failed) and disable it. (Hypothetically > >> > >> speaking, we might be able to skip the setting aside part, because the > >> > >> definition should be in a script. However, in some cases it might not > >> > >> be.) > >> > >> > >> > >> Thoughts? > >> > >> > >> > >> Thanks, > >> > >> > >> > >> -- > >> > >> Raul > >> > >> > >> > >> On Thu, May 19, 2016 at 11:59 PM, bill lam <bbill....@gmail.com> > >> > >> wrote: > >> > >> > I checked agin, it is the local noun wd_fn inside wdhandler. > >> > >> > so perhaps you can try > >> > >> > ". wd_fn,'=:empty' > >> > >> > or > >> > >> > 4!:55 <wd_fn > >> > >> > inside the catch block. > >> > >> > > >> > >> > Пт, 20 май 2016, bill lam написал(а): > >> > >> >> the first few rows of wdq (global set inside wdhander) should > >> > provide that > >> > >> >> info. see j user manual or jwiki for wd documentation. > >> > >> >> On May 20, 2016 6:55 AM, "Raul Miller" <rauldmil...@gmail.com> > >> > wrote: > >> > >> >> > >> > >> >> > Is there a systematic way of determining which verb name is the > >> > name > >> > >> >> > of the currently running event handler? > >> > >> >> > > >> > >> >> > Thanks, > >> > >> >> > > >> > >> >> > -- > >> > >> >> > Raul > >> > >> >> > > >> > >> >> > > >> > >> >> > On Thu, May 19, 2016 at 7:27 AM, bill lam <bbill....@gmail.com> > >> > wrote: > >> > >> >> > > c++ jqt side did not know what had happened on the j engine so > >> > it will > >> > >> >> > keep > >> > >> >> > > on calling J on paint. You need to make j paint verb a no-op > >> > after the > >> > >> >> > > first popup. > >> > >> >> > > > >> > >> >> > > For debug suspension, you may want try catchd instead of catch. > >> > >> >> > suspension > >> > >> >> > > in the presence of events is rather troublesome. IIRC all > >> > >> >> > > events > >> > except > >> > >> >> > > paint are discarded during suspension, so that you may still > >> > >> >> > > get > >> > infinite > >> > >> >> > > in suspension. > >> > >> >> > > > >> > >> >> > > what I used to do is set > >> > >> >> > > wdinfo_z_=: smoutput_z_ > >> > >> >> > > in order to debug gl paint error. > >> > >> >> > > On May 19, 2016 5:28 PM, "Raul Miller" <rauldmil...@gmail.com> > >> > wrote: > >> > >> >> > > > >> > >> >> > >> So... maybe it would make sense to replace > >> > >> >> > >> > >> > >> >> > >> wdinfo 'wdhandler';'error in: ',wd_fn,wd_err > >> > >> >> > >> > >> > >> >> > >> in wdhandler with something like > >> > >> >> > >> > >> > >> >> > >> if. -.wdquery 'wdhandler';'error in: > >> > >> >> > >> ',wd_fn,wd_err,LF,'continue?' do.throw.end. > >> > >> >> > >> > >> > >> >> > >> ? > >> > >> >> > >> > >> > >> >> > >> Except... I tried that, and throw. was not sufficient to stop > >> > the > >> > >> >> > >> infinite condition with debugging disabled, and that line of > >> > code > >> > >> >> > >> never runs with debugging enabled. So there is something else > >> > going > >> > >> >> > >> on, also... > >> > >> >> > >> > >> > >> >> > >> Perhaps the best compromise for development purposes would be > >> > >> >> > >> to > >> > >> >> > >> disable the offending handler (erase the name) if the user > >> > elects > >> > >> >> > >> cancelling out of it? > >> > >> >> > >> > >> > >> >> > >> Thanks, > >> > >> >> > >> > >> > >> >> > >> -- > >> > >> >> > >> Raul > >> > >> >> > >> > >> > >> >> > >> > >> > >> >> > >> On Wed, May 18, 2016 at 6:36 PM, bill lam > >> > >> >> > >> <bbill....@gmail.com> > >> > wrote: > >> > >> >> > >> > the popup dialog box is raised by a try catch block in the > >> > verb > >> > >> >> > >> wdhandler, > >> > >> >> > >> > since it does not throw an error after the popup, there is > >> > >> >> > >> > no > >> > >> >> > suspension. > >> > >> >> > >> > the gl area partially hidden by the popup box is repainted > >> > and since > >> > >> >> > the > >> > >> >> > >> gl > >> > >> >> > >> > paint or any other jqt events has no knowledge that there > >> > >> >> > >> > has > >> > been an > >> > >> >> > >> error > >> > >> >> > >> > in j wdhander being caught so there is an infinite loop. > >> > >> >> > >> > You > >> > may add > >> > >> >> > >> some > >> > >> >> > >> > codes in the j paint verb to detect that error condition. > >> > >> >> > >> > > >> > >> >> > >> > this had been reported but fixing it is a low priority. > >> > >> >> > >> > On May 19, 2016 5:09 AM, "Raul Miller" > >> > >> >> > >> > <rauldmil...@gmail.com> > >> > wrote: > >> > >> >> > >> > > >> > >> >> > >> >> Currently, if I am using the gl commands for an isigraph > >> > control, and > >> > >> >> > >> >> there's an error, I get behavior which I do not understand. > >> > >> >> > >> >> > >> > >> >> > >> >> (1) I get a popup telling me that there was an error (and > >> > giving me > >> > >> >> > >> >> the details of the error. > >> > >> >> > >> >> > >> > >> >> > >> >> (2) I only have an "OK" option on that popup. > >> > >> >> > >> >> > >> > >> >> > >> >> (3) When I click "OK", execution resumes as if there were > >> > >> >> > >> >> no > >> > error > >> > >> >> > >> >> (presumably on the line following the line with the error. > >> > >> >> > >> >> > >> > >> >> > >> >> This quickly leads to an infinite loop condition where my > >> > only option > >> > >> >> > >> >> is to shut down J. > >> > >> >> > >> >> > >> > >> >> > >> >> At the very least, I think I should get an option to have > >> > the error > >> > >> >> > >> >> stop execution somehow. > >> > >> >> > >> >> > >> > >> >> > >> >> (13!:0]1 avoids this problem, but why was it a good idea to > >> > make me > >> > >> >> > >> >> lose control of the J session in the first place?) > >> > >> >> > >> >> > >> > >> >> > >> >> (I'm not sure if this goes in jsource, since I think this > >> > >> >> > >> >> is > >> > a jqt > >> > >> >> > >> >> issue, not a j engine issue. Please let me know, though, if > >> > there's a > >> > >> >> > >> >> better forum for this topic.) > >> > >> >> > >> >> > >> > >> >> > >> >> Thanks, > >> > >> >> > >> >> > >> > >> >> > >> >> -- > >> > >> >> > >> >> Raul > >> > >> >> > >> >> > >> > >> >> > > >> > ---------------------------------------------------------------------- > >> > >> >> > >> >> For information about J forums see > >> > >> >> > http://www.jsoftware.com/forums.htm > >> > >> >> > >> > > >> > ---------------------------------------------------------------------- > >> > >> >> > >> > For information about J forums see > >> > >> >> > http://www.jsoftware.com/forums.htm > >> > >> >> > >> > >> > ---------------------------------------------------------------------- > >> > >> >> > >> For information about J forums see > >> > http://www.jsoftware.com/forums.htm > >> > >> >> > > > >> > ---------------------------------------------------------------------- > >> > >> >> > > For information about J forums see > >> > http://www.jsoftware.com/forums.htm > >> > >> >> > > >> > ---------------------------------------------------------------------- > >> > >> >> > For information about J forums see > >> > http://www.jsoftware.com/forums.htm > >> > >> > > >> > >> > -- > >> > >> > regards, > >> > >> > ==================================================== > >> > >> > GPG key 1024D/4434BAB3 2008-08-24 > >> > >> > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 > >> > >> > gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 > >> > >> > ---------------------------------------------------------------------- > >> > >> > For information about J forums see > >> > http://www.jsoftware.com/forums.htm > >> > >> ---------------------------------------------------------------------- > >> > >> For information about J forums see http://www.jsoftware.com/forums.htm > >> > > > >> > > -- > >> > > regards, > >> > > ==================================================== > >> > > GPG key 1024D/4434BAB3 2008-08-24 > >> > > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 > >> > > gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 > >> > > ---------------------------------------------------------------------- > >> > > For information about J forums see http://www.jsoftware.com/forums.htm > >> > ---------------------------------------------------------------------- > >> > For information about J forums see http://www.jsoftware.com/forums.htm > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > > > > -- > > regards, > > ==================================================== > > GPG key 1024D/4434BAB3 2008-08-24 > > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 > > gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm -- regards, ==================================================== GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
