Uri Guttman wrote:
only for ++/-- and +=/-= will that work with no warnings. if he uses an
undef value in another arithmetic expression it will warn.
Also, undef values work in if/unless and while/until conditions.
Usually when you see indexes used with arrays, it is because the
programmer does know of all the tools available for manipulating lists.
99.97% of the time, indexes are not needed. But if you must insist on
initializing the array, it's better to use the ||= assignment to
indicated that zero is the default value, even if the array hasn't been
used before.
$a[$_] ||= 0 for 0 .. 125;
One of the common patterns in Perl is using || for defaults.
$var ||= $default;
or
$var = expr || $default;
You should use common patterns where possible so that your code will be
easier to understand.
--
Just my 0.00000002 million dollars worth,
Shawn
Programming is as much about organization and communication
as it is about coding.
I like Perl; it's the only language where you can bless your
thingy.
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