[ww-devel] Making Perl modules available
Davide P. Cervone
dpvc at union.edu
Mon Jun 29 14:20:40 EDT 2015
Actually,
\{ Data::Dumper::Dumper(@$matrix) \}
Might be more what you're after.
Davide
On Jun 29, 2015, at 2:13 PM, Davide P. Cervone wrote:
> Try
>
> \{ Data::Dumper->Dump(@$matrix) \}
>
> and see if that works.
>
> Davide
>
>
> On Jun 29, 2015, at 2:01 PM, Andrew Dabrowski wrote:
>
>> The Data prefix didn't help. Here's a minimal example.
>>
>> PG file:
>>
>> DOCUMENT();
>>
>> loadMacros(
>> "PGstandard.pl",
>> "MathObjects.pl",
>> "PGML.pl",
>> "PGchoicemacros.pl",
>> "PGauxiliaryFunctions.pl",
>> "gameTheory.pl",
>> );
>>
>> TEXT(beginproblem);
>>
>> $matrix = [ [1,2], [3,4] ];
>>
>> BEGIN_TEXT
>>
>> \{ Data::Dumper @$matrix \}
>>
>> END_TEXT
>>
>> ENDDOCUMENT();
>>
>>
>> The output:
>>
>>
>> Warning -- there may be something wrong with this question. Please inform your instructor including the warning messages below.
>> (0 pts) Problems/GameTheory/datadumper.pg
>> \{
>> Data::Dumper ARRAY(0xdc49220)ARRAY(0xdc491f0)
>>
>> \}
>>
>> Edit2 Edit3
>> Show correct answers
>>
>> You have attempted this problem 2,000 times.
>> Your overall recorded score is 0%. (This problem will not count towards your grade.)
>> You have unlimited attempts remaining.
>>
>> WeBWorK Warnings
>>
>> WeBWorK has encountered warnings while processing your request. If this occured when viewing a problem, it was likely caused by an error or ambiguity in that problem. Otherwise, it may indicate a problem with the WeBWorK system itself. If you are a student, report these warnings to your professor to have them corrected. If you are a professor, please consult the warning output below for more information.
>>
>> Warning messages
>>
>> ERROR in old_safe_ev, PGbasicmacros.pl: <PRE>
>> ## There is an error occuring inside evaluation brackets \{ ...code... \}
>> ## somewhere in an EV2 or EV3 or BEGIN_TEXT block.
>> ## Code evaluated:
>> ## Data::Dumper @$matrix
>> ##syntax error at line 2 of (eval 1261), near "Data::Dumper @"
>> ##</PRE><BR/>
>> at (eval 1181) line 1671
>> Request information
>>
>> Time Mon Jun 29 13:54:07 2015
>> Method GET
>> URI /webwork2/NewGenEd/Undefined_Set/1/
>>
>>
>> In my defaults.config I have:
>>
>> ${pg}{modules} = [
>> [qw(HTML::Parser)],
>> [qw(HTML::Entities)],
>> [qw(DynaLoader)],
>> [qw(Exporter)],
>> [qw(GD)],
>> [qw(AlgParser AlgParserWithImplicitExpand Expr ExprWithImplicitExpand utf8)],
>> [qw(AnswerHash AnswerEvaluator)],
>> [qw(WWPlot)], # required by Circle (and others)
>> [qw(Circle)],
>> [qw(Complex)],
>> [qw(Complex1)],
>> [qw(Distributions)],
>> [qw(Fraction)],
>> [qw(Fun)],
>> [qw(Hermite)],
>> [qw(Label)],
>> [qw(ChoiceList)],
>> [qw(Match)],
>> [qw(MatrixReal1)], # required by Matrix
>> [qw(Matrix)],
>> [qw(Multiple)],
>> [qw(PGrandom)],
>> [qw(Regression)],
>> [qw(MatrixWithElemOps MatrixReal1 Matrix)],
>> [qw(SysLinEq MatrixReal1 Matrix MatrixWithElemOps)],
>> [qw(Select)],
>> [qw(Units)],
>> [qw(VectorField)],
>> [qw(Parser Value)],
>> [qw(Parser::Legacy)],
>> [qw(Statistics)],
>> # [qw(SaveFile)],
>> [qw(Chromatic)], # for Northern Arizona graph problems
>> # # -- follow instructions at libraries/nau_problib/lib/README to install
>> [qw(Applet FlashApplet JavaApplet CanvasApplet GeogebraWebApplet)],
>> [qw(PGcore PGalias PGresource PGloadfiles PGanswergroup PGresponsegroup Tie::IxHash)],
>> [qw(Locale::Maketext)],
>> [qw(WeBWorK::Localize)],
>> [qw(JSON)],
>> [qw(Data::Dumper)]
>> ];
>>
>>
>>
>> On 06/29/2015 01:50 PM, Davide P. Cervone wrote:
>>> You will probably need to use the explicit namespace, since that is what is imported into the safe compartment:
>>>
>>> Data::Dumper @$socwelbest
>>>
>>> Give that a try. Of not, can you post the complete problem so that we can reproduce your situation? It is hard to tell without seeing what you are actually doing.
>>>
>>> Davide
>>>
>>>
>>> On Jun 29, 2015, at 1:39 PM, Andrew Dabrowski wrote:
>>>
>>>> I should to my earlier message that I did restart httpd. I'm running Arch Linux.
>>>>
>>>>
>>>> I thought it would be handy to make Perl's Data::Dumper available for debugging. So on my office computer I added the line
>>>>
>>>> [qw(Data::Dumper)]
>>>>
>>>> to ${pg}{modules} in defaults.config. But it didn't work, I still get an error.
>>>>
>>>> This is the code in my pg file to display debugging info.
>>>>
>>>> BEGIN_TEXT
>>>>
>>>> \{ Dumper @$socwelbest \}
>>>>
>>>> END_TEXT
>>>>
>>>> The display is this.
>>>>
>>>> <Mail Attachment.png>
>>>>
>>>> Here's the error message.
>>>>
>>>> Warning messages
>>>>
>>>> ERROR in old_safe_ev, PGbasicmacros.pl: <PRE>
>>>> ## There is an error occuring inside evaluation brackets \{ ...code... \}
>>>> ## somewhere in an EV2 or EV3 or BEGIN_TEXT block.
>>>> ## Code evaluated:
>>>> ## Dumper @$socwelbest
>>>> ##syntax error at line 2 of (eval 1132), near "Dumper @"
>>>> ##</PRE><BR/>
>>>> at (eval 1051) line 1671
>>>>
>>>>
>>>> It actually works fine when I use my own dumper function, defined in a pl file (apart from the fact that my dumper isn't as nice as Perl's).
>>>>
>>>> What's the correct way to do this, i.e. add a aPerl module to webwork?
>>>>
>>>>
>>>> --
>>>> Andrew Dabrowski || ...my suspicion is that the universe is
>>>> Indiana University || not only queerer than we suppose, but
>>>> Swain East 117 || queerer than we can suppose. -JBS Haldane
>>>>
>>>> _______________________________________________
>>>> webwork-devel mailing list
>>>> webwork-devel at webwork.maa.org
>>>> http://webwork.maa.org/mailman/listinfo/webwork-devel
>>>
>>>
>>>
>>> _______________________________________________
>>> webwork-devel mailing list
>>> webwork-devel at webwork.maa.org
>>> http://webwork.maa.org/mailman/listinfo/webwork-devel
>>
>> --
>> Andrew Dabrowski || ...my suspicion is that the universe is
>> Indiana University || not only queerer than we suppose, but
>> Swain East 117 || queerer than we can suppose. -JBS Haldane
>>
>> _______________________________________________
>> webwork-devel mailing list
>> webwork-devel at webwork.maa.org
>> http://webwork.maa.org/mailman/listinfo/webwork-devel
>
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