I need to sort the keys in a hash. The keys are the question number
and the values are the student's answer. A numeric sort with <=> won't
work since retaking a missed question (say, 2) produces the new key,
2h with its new answer. A representative hash might look like this
1 => b
2h => c
3 => a
2 => a
I chose the sort routine
{$a <=> $b || $a cmp $b}
which sorts correctly but gives me a warning about the occasional "h"
not being numeric. I could suppress warnings for the sort routine or
for the whole code, but I'd rather write better code, code that
doesn't produce a warning. Unfortunately I haven't been able to figure
out the correct code, despite looking through the sort sections of the
standard books on Perl. Even though I'm a Perl novice, my intuition
tells me that there is probably a simple way to do this. But several
days of experimenting have been unsuccessful.
Advice appreciated!
Rick Triplett
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