[LON-CAPA-dev] Installing Modules for LON-CAPA

[Gerd Kortemeyer]

Hi Donnel,

Every time the kid views a problem, the code is run once.

Every time the kid submits an answer, the code is run twice.

- Gerd.

On Sep 27, 2005, at 11:42 AM, GARRETT, DONNELL MAZON wrote:

> Hi
>
> I have another question about .library files.  When you say "make the
> problem a little slowerish", I understand that this is because of  
> since
> more time is spent parsing and compiling Perl code.  My question is  
> when
> is the actual script from .problem files ran?  Is it when the student
> hits "submit answer" and the randomly generated inputs are ran though
> the script and then the output is compared to the student's  
> answer?  Or
> is it when the page is displayed to begin with, and the script has ran
> and the output is waiting to be compared to the student's answer.   
> Or is
> it done before that?
>
> Thanks
> Donnell
>
> -----Original Message-----
> From: lon-capa-dev-admin@mail.lon-capa.org
> [mailto:lon-capa-dev-admin@mail.lon-capa.org] On Behalf Of Guy
> Albertelli II
> Sent: Monday, September 26, 2005 3:27 PM
> To: lon-capa-dev@mail.lon-capa.org
> Subject: Re: [LON-CAPA-dev] Installing Modules for LON-CAPA
>
> Hi Donnell,
>
>
>
>> That sounds great about you adding Math::Complex and
>> Math::Cephes::Matrix.  If those were added, I'm sure that 99% of our
>> problems would go away.  Is there any way you can tell me when you
>>
> plan
>
>> to implement those two (or similar modules) into CAPA?
>>
>
> Any changes like this are very unlikely to occur before our next
> non-bugfix release. That next release like that will be version 2.1 in
> December.
>
> (And it is Lon-CAPA ;-)
>
>
>> Also, I understand about not allowing for arbitrary modules to be
>>
> added
>
>> into the CAPA problem sets, that makes sense.  However, how is that
>> different from a .library file?  For now, until you guys add
>> Math::Complex and Math::Cephes::Matrix (or similar modules), the
>> .library route seems to be the way to go.  With the .library file, it
>> sounds like we can create our own functions that we can deploy
>> throughout our .problem sets.  That sounds good, since that was I was
>> originally after to begin with.  However, I am a bit confused.   
>> How is
>> adding a .library file not add bloat while a module does?
>>
>
> Each .library file is parsed at the time of and <import> and used
> then, and the resulting information is thrown away at the end of the
> .problem evaluation.
>
> This means slowerish homework problems. (Since more time is spent
> parsing and compiling Perl code.) (Although the difference here can be
> is the hunderths of a second range, depending on homw much code is in
> a .library)
>
>
>> Where can I find information about the creation and installation of
>> .library files?  Until the two modules are installed, that sounds  
>> like
>> how we should proceed.
>>
>
> They basically work just like a .problem
>
> 1) in CSTR select the option 'New library file' and type in a name,
> click Go
> 2) Click Continue
> 3) Select a template from the list ('Basic Script library' is probably
> what you want
> 4) Edit or EdiXML it
> 5) stick sub or other variable definitions in to the <script>
> 6) publish it
>
> Then in a .problem insert:
>
> <import>/res/domain/user/path/to/new.library</import>
>
> After the <import> All subsequent <script> can use the sub and
> variable definitions from the <library>
>
> -- 
> guy@albertelli.com   0-7-2-1-27,137
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