I have a stylistic question about preprocessing versus custom response. An
example of the particular situation is that I have a question whose answer is a
rational number, say 5/2. I would like either 5/2 or 2.5 to be accepted, but
only these two answers. I don't want 10/4 or 2.50 to be accepted. My current
approach (based on the discouragement of custom response problems from the
manual because they can't be statistically analyzed) is to use a string
response with answer 5/2 and a preprocessor that does the following:
if ($response eq 2.5) {return 5/2;}
else {return $response;}
Is this considered bad form? Should I be using a custom response instead? Is
there another approach that would be better?
Thanks,
Jacob Bond
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