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std_print_q -- plugin method used in "List.pm" type objects
DescriptionThis is a method ( i.e. a subroutine whose first argument is a reference to a parent object ) which defines how the list of questions is printed from a List.pm object.It formats a string containing the questions vertically in an ordered list, indexed by numbers with each question preceeded by an answer blank. The string is returned.
Syntax
std_print_q( $self, @array)
Params
$self is a reference to the parent list object and can be used to reference preferences stored there.
@array is the list of questions to be displayed.
Returns
A string, containing the questions, properly formatted.
Examples
$ml = new_match_list();
$ml->rf_print_a(~~&std_print_a); # set the answer format to use the std_print_a method
$ml->rf_print_q(~~&std_print_q); # set the question format to use the std_print_q method
$ml->ans_rule_len(20); # make the answer rules 20 characters long for each question. (Default is 4).
# enter three questions and their answers
$ml->qa( "What color is a rose?",
"Red",
"What color is the sky?",
"Blue",
"What color is the sea?",
"Green"
);
# choose two of these questions, ordered at random,
# which will be printed in the problem.
$ml->choose(2);
BEGIN_TEXT
Match the answers below with these questions:$BR
\{$ml->print_q\} Print the questions$BR
Answers:
\{$ml->print_a \} Print the answers
END_TEXT
ANS( $ml->ra_correct_ans() ); #submit the correct answers
Notes
This method is defined in PGchoicemacros.pl. Note that reversingwould result in the list of questions being labeled with letters and the list of answers being labeled with numbers.
$ml->rf_print_q(~~&std_print_a);
The code in these two methods is a good basis for writing subroutines which provide different formats for listing questions or answers.
See Also
std_print_a, pop_up_list_print_q, Match.pm", "Select.pm", "List.pm", "PGchoicemacros.pl"
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