Right out of perlop:
Note that just as in C, Perl doesn’t define when the variable is incremented or decremented. You just know it will be done sometime before or after the
value is returned. This also means that modifying a variable twice in the same statement will lead to undefined behaviour. Avoid statements like:
$i = $i ++;
print ++ $i + $i ++;
regards,
tomte
An intellectual is someone whose mind watches itself. -- Albert Camus
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