I think JHS labs gets it list from the contents of ~addons/labs/labs. If
you are seeing some labs and they are working perhaps your labs weren't
included in the jal update of labs. As a start verify the labs your want
are in your addons folder.

On Mon, Nov 28, 2011 at 6:55 PM, Ian Clark <[email protected]> wrote:

> No, Björn, the labs are just not there. I know what they look like,
> 'cos I wrote 'em.
>
> 2011/11/28 Björn Helgason <[email protected]>:
> > The list of labs in JHS is a bit tricky to understand.
> > The name you see is not the name of the file but the name of the lab you
> > see in the beginning of the file.
> > Open a lab and you see what is there.
> > It is a great tool to use as a teaching tool and so easy to work with.
> > Just change the contents of a file and you have a new lab.
> >
> >
> > 2011/11/28 Ian Clark <[email protected]>
> >
> >> Even after restarting, there are labs (viz. cal.ijt and uu.ijt) which
> >> I see have been downloaded and apparently installed
> >> (i.e they are listed in ~addons/labs/labs/lablist.txt and
> >> ~addons/config/config.ijs) -yet do not appear in the Labs dropdown.
> >>
> >> Just where does jhs get the contents of the labs dropdown from?
> >>
> >> 2011/11/28 Björn Helgason <[email protected]>:
> >> > When you start JHS it scans for the ijt files and it does not find
> them
> >> > before you do the install of the addons.
> >> >
> >> > So if you create a new ijt file you need to restart the JHS so it will
> >> find
> >> > it.
> >> >
> >> > After that you can change the file and it will read the changes just
> >> > restart the lab and no need to restart JHS
> >> >
> >> > 2011/11/28 Ian Clark <[email protected]>
> >> >
> >> >> There are two downloads for the Mac, and I've just tried the same
> >> >> steps with the other one:
> >> >>
> >> >>   JVERSION
> >> >> Engine: j701/2011-01-10/11:25 build: Feb  6 2011 16:16:29
> >> >> Library: 7.01.043
> >> >> Platform: Darwin 64
> >> >> Installer: j701a_mac64.dmg
> >> >>
> >> >> InstallPath: /Applications/j64-701
> >> >>
> >> >> In this version I'm pleased to confirm that studio > labs... works
> just
> >> >> fine.
> >> >>
> >> >> Björn says:
> >> >>
> >> >> > After installing the labs you restart JHS server and refresh the
> >> browser.
> >> >>
> >> >> I didn't do that for j64-701 -- and it still worked.
> >> >>
> >> >> However, taking the hint, I've gone back to j701 (32-bit) and
> >> >> restarted both the server and the jijx browser page.
> >> >> Now studio > labs... works in j701 also !!
> >> >>
> >> >> I've no way of telling whether it was due to restarting j701, or
> >> >> running j64-701 successfully in-between.
> >> >>
> >> >>
> >> >> On Mon, Nov 28, 2011 at 9:02 PM, Ian Clark <[email protected]>
> >> wrote:
> >> >> > Coming back to j701 jhs after a long break, I have reinstalled it
> >> afresh:
> >> >> >
> >> >> >   JVERSION
> >> >> > Engine: j701/2011-01-10/11:25
> >> >> > Library: 7.01.040
> >> >> > Platform: Darwin 32
> >> >> > Installer: j701a_mac_intel.dmg
> >> >> > InstallPath: /Applications/j701
> >> >> >
> >> >> > I next installed all addons by typing:
> >> >> >   install 'all'
> >> >> > Pacman (accessed via menu: link > jal) confirms that all addons are
> >> >> > installed and up to date.
> >> >> >
> >> >> > However, menu: studio > labs --does not work and gives the message:
> >> >> > ---
> >> >> > No labs installed.
> >> >> > Do pacman studio/labs install and try again.
> >> >> >
> >> >> > Labs are interactive tutorials and are a good
> >> >> > way to learn J.
> >> >> >
> >> >> > Labs are not always current with the latest system
> >> >> > and may run with minor errors that can be ignored.
> >> >> > ---
> >> >> >
> >> >> > Do labs actually work yet in jhs? Or has something recently broken?
> >> >> >
> >> >> >
> >> >> >
> >> >> > On Sun, Nov 6, 2011 at 12:28 PM, Gary Robinson <[email protected]>
> >> wrote:
> >> >> >> Hi,
> >> >> >>
> >> >> >> I am trying J for the first time this morning. I quickly got hung
> up
> >> >> though, because the installation docs suggest trying Studio|Labs.
> When I
> >> >> try to access it, it says
> >> >> >>
> >> >> >>  No labs installed.
> >> >> >>  Do pacman labs/labs install and try again.
> >> >> >>
> >> >> >> If I type
> >> >> >>
> >> >> >>  pacman labs/labs install
> >> >> >>
> >> >> >> into the J console, nothing seems to happen. And if I subsequently
> >> try
> >> >> Studio|Labs again, I get the same error message as before.
> >> >> >>
> >> >> >> Anyone have any ideas?
> >> >> >>
> >> >> >> --
> >> >> >>
> >> >> >> Gary Robinson
> >> >> >> CTO
> >> >> >> Emergent Discovery, LLC
> >> >> >> personal email: [email protected]
> >> >> >> work email: [email protected]
> >> >> >> Company: http://www.emergentdiscovery.com
> >> >> >> Blog:    http://www.garyrobinson.net
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >>
> >> >> >>
> >> ----------------------------------------------------------------------
> >> >> >> For information about J forums see
> >> http://www.jsoftware.com/forums.htm
> >> >> >>
> >> >> >
> >> >>
> ----------------------------------------------------------------------
> >> >> For information about J forums see
> http://www.jsoftware.com/forums.htm
> >> >>
> >> >
> >> >
> >> >
> >> > --
> >> > Björn Helgason, Verkfræðingur
> >> > Fornustekkum II
> >> > 781 Hornafirði,
> >> > t-póst: [email protected]
> >> > gsm: +3546985532
> >> > twitter: @flugfiskur
> >> > http://groups.google.com/group/J-Programming
> >> >
> >> >
> >> > Tæknikunnátta höndlar hið flókna, sköpunargáfa er meistari
> einfaldleikans
> >> >
> >> > góður kennari getur stigið á tær án þess að glansinn fari af skónum
> >> >          /|_      .-----------------------------------.
> >> >         ,'  .\  /  | Með léttri lund verður        |
> >> >     ,--'    _,'   | Dagurinn í dag                     |
> >> >    /       /       | Enn betri en gærdagurinn  |
> >> >   (   -.  |        `-----------------------------------'
> >> >   |     ) |         (\_ _/)
> >> >  (`-.  '--.)       (='.'=)   ♖♘♗♕♔♙
> >> >   `. )----'        (")_(") ☃☠
> >> > ----------------------------------------------------------------------
> >> > For information about J forums see
> http://www.jsoftware.com/forums.htm
> >> ----------------------------------------------------------------------
> >> For information about J forums see http://www.jsoftware.com/forums.htm
> >>
> >
> >
> >
> > --
> > Björn Helgason, Verkfræðingur
> > Fornustekkum II
> > 781 Hornafirði,
> > t-póst: [email protected]
> > gsm: +3546985532
> > twitter: @flugfiskur
> > http://groups.google.com/group/J-Programming
> >
> >
> > Tæknikunnátta höndlar hið flókna, sköpunargáfa er meistari einfaldleikans
> >
> > góður kennari getur stigið á tær án þess að glansinn fari af skónum
> >          /|_      .-----------------------------------.
> >         ,'  .\  /  | Með léttri lund verður        |
> >     ,--'    _,'   | Dagurinn í dag                     |
> >    /       /       | Enn betri en gærdagurinn  |
> >   (   -.  |        `-----------------------------------'
> >   |     ) |         (\_ _/)
> >  (`-.  '--.)       (='.'=)   ♖♘♗♕♔♙
> >   `. )----'        (")_(") ☃☠
> > ----------------------------------------------------------------------
> > 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

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