[WWdevel] Problem with num_cmp and strings

[Michael G. <ga...@ma...>]

Hi Davide,

I'm hoping you can help me out.  I'm getting a bug on the following  
problem below whenever 'DNE' is entered as an answer.

Do you recognize this as some configuration flag I'm missing?  I have  
the pg directory up to the latest CVS HEAD.
I'm also seeing this error on devel which wasn't affected by the  
latest crash.

Rolling back the pg directory a month doesn't seem to affect the  
problem -- it is there in either case.

I've listed the error message below the problem.  It would help if  
you could try this out
on your machine and let me know whether it works.  I'm puzzled as to  
why these problems
have stopped working on all three machine (devel, hosted and math)  
particularly since not much has been going on
on devel.

Thanks much.

Take care,

Mike


DOCUMENT();        # This should be the first executable line in the  
problem.

loadMacros(
"PG.pl",
"PGbasicmacros.pl",
"PGchoicemacros.pl",
"PGanswermacros.pl",
"PGgraphmacros.pl",
"PGauxiliaryFunctions.pl"
);

TEXT(beginproblem());
$showPartialCorrectAnswers = 1;
BEGIN_TEXT
Enter DNE or a number \{ans_rule\}
$PAR
Enter DNE or a number \{ans_rule\}

END_TEXT

ANS(num_cmp('DNE', strings=>['DNE'])) ;
ANS(num_cmp(5, strings=>['DNE']))  ;

ENDDOCUMENT();        # This should be the last executable line in  
the problem.

#####
Warning messages

Error in Translator.pm::process_answers: Answer AnSwEr1: |dne|
Not a CODE reference at line 4015 of (eval 366)
Died within main::check_strings called at line 545 of [PG]/lib/ 
AnswerHash.pm
from within AnswerEvaluator::evaluate called at line 1 of (eval 785)
Error in Translator.pm::process_answers: Answer AnSwEr1:
Answer evaluators must return a hash or an AnswerHash type, not type  
|| at /home/gage/webwork/pg/lib/WeBWorK/PG/Translator.pm line 1158
Use of uninitialized value in numeric ge (>=) at /home/gage/webwork/ 
webwork-modperl/lib/WeBWorK/ContentGenerator/Problem.pm line 252.
Use of uninitialized value in pattern match (m//) at /home/gage/ 
webwork/webwork-modperl/lib/WeBWorK/ContentGenerator/Problem.pm line  
253.
Use of uninitialized value in numeric ge (>=) at /home/gage/webwork/ 
webwork-modperl/lib/WeBWorK/ContentGenerator/Problem.pm line 254.
Use of uninitialized value in numeric gt (>) at /home/gage/webwork/ 
webwork-modperl/lib/WeBWorK/ContentGenerator/Problem.pm line 254.
Use of uninitialized value in numeric gt (>) at /home/gage/webwork/ 
webwork-modperl/lib/WeBWorK/ContentGenerator/Problem.pm line 257.

"Only dead fish swim with the stream."