in reply to Prefix and postfix increment/decrement operator query
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 ++;
Perl will not guarantee what the result of the above statements is.
"Undefined behaviour" means "anything could happen".
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Re^2: Prefix and postfix increment/decrement operator query
by Marshall (Canon) on Jul 03, 2009 at 01:53 UTC
by saurabh.hirani (Beadle) on Jul 03, 2009 at 04:50 UTC